Home / 1,772.20-2,445.66-975.60

Finding the Fourth Proportional to 1,772.20, 2,445.66 and 975.60

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Solution

The fourth proportional to 1,772.20, 2,445.66 and 975.60 is: 1,346.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.20 : 2,445.66 = 975.60 : x
  2. Step 2: Convert to fraction form
    1,772.20/2,445.66 = 975.60/x
  3. Step 3: Cross multiply
    1,772.20x = 2,445.66 × 975.60
  4. Step 4: Simplify right side
    1,772.20x = 2,385,985.90
  5. Step 5: Solve for x
    x = 2,385,985.90/1,772.20
  6. Step 6: Final answer
    x = 1,346.34

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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.