Home / 1,610.52-2,220.76-1,275.20

Finding the Fourth Proportional to 1,610.52, 2,220.76 and 1,275.20

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Solution

The fourth proportional to 1,610.52, 2,220.76 and 1,275.20 is: 1,758.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.52 : 2,220.76 = 1,275.20 : x
  2. Step 2: Convert to fraction form
    1,610.52/2,220.76 = 1,275.20/x
  3. Step 3: Cross multiply
    1,610.52x = 2,220.76 × 1,275.20
  4. Step 4: Simplify right side
    1,610.52x = 2,831,913.15
  5. Step 5: Solve for x
    x = 2,831,913.15/1,610.52
  6. Step 6: Final answer
    x = 1,758.38

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Half scale
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Double scale
Find fourth proportional to 1,611.52, 2,222.14 and 1,276.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.