Home / 1,573.60-2,170.30-1,396.69

Finding the Fourth Proportional to 1,573.60, 2,170.30 and 1,396.69

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Solution

The fourth proportional to 1,573.60, 2,170.30 and 1,396.69 is: 1,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.60 : 2,170.30 = 1,396.69 : x
  2. Step 2: Convert to fraction form
    1,573.60/2,170.30 = 1,396.69/x
  3. Step 3: Cross multiply
    1,573.60x = 2,170.30 × 1,396.69
  4. Step 4: Simplify right side
    1,573.60x = 3,031,236.31
  5. Step 5: Solve for x
    x = 3,031,236.31/1,573.60
  6. Step 6: Final answer
    x = 1,926.31

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Half scale
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Double scale
Find fourth proportional to 1,574.60, 2,171.68 and 1,397.69
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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.