Home / 1,502.32-2,073.40-839.21

Finding the Fourth Proportional to 1,502.32, 2,073.40 and 839.21

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Solution

The fourth proportional to 1,502.32, 2,073.40 and 839.21 is: 1,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.32 : 2,073.40 = 839.21 : x
  2. Step 2: Convert to fraction form
    1,502.32/2,073.40 = 839.21/x
  3. Step 3: Cross multiply
    1,502.32x = 2,073.40 × 839.21
  4. Step 4: Simplify right side
    1,502.32x = 1,740,018.01
  5. Step 5: Solve for x
    x = 1,740,018.01/1,502.32
  6. Step 6: Final answer
    x = 1,158.22

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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.