Home / 1,381.04-2,081.62-1,240.16

Finding the Fourth Proportional to 1,381.04, 2,081.62 and 1,240.16

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Solution

The fourth proportional to 1,381.04, 2,081.62 and 1,240.16 is: 1,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.04 : 2,081.62 = 1,240.16 : x
  2. Step 2: Convert to fraction form
    1,381.04/2,081.62 = 1,240.16/x
  3. Step 3: Cross multiply
    1,381.04x = 2,081.62 × 1,240.16
  4. Step 4: Simplify right side
    1,381.04x = 2,581,541.86
  5. Step 5: Solve for x
    x = 2,581,541.86/1,381.04
  6. Step 6: Final answer
    x = 1,869.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.