Home / 1,557.13-2,142.55-1,503.26

Finding the Fourth Proportional to 1,557.13, 2,142.55 and 1,503.26

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Solution

The fourth proportional to 1,557.13, 2,142.55 and 1,503.26 is: 2,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.13 : 2,142.55 = 1,503.26 : x
  2. Step 2: Convert to fraction form
    1,557.13/2,142.55 = 1,503.26/x
  3. Step 3: Cross multiply
    1,557.13x = 2,142.55 × 1,503.26
  4. Step 4: Simplify right side
    1,557.13x = 3,220,809.71
  5. Step 5: Solve for x
    x = 3,220,809.71/1,557.13
  6. Step 6: Final answer
    x = 2,068.43

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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.