Home / 7,419.50-11,115.35-3,717.40

Finding the Fourth Proportional to 7,419.50, 11,115.35 and 3,717.40

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Solution

The fourth proportional to 7,419.50, 11,115.35 and 3,717.40 is: 5,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.50 : 11,115.35 = 3,717.40 : x
  2. Step 2: Convert to fraction form
    7,419.50/11,115.35 = 3,717.40/x
  3. Step 3: Cross multiply
    7,419.50x = 11,115.35 × 3,717.40
  4. Step 4: Simplify right side
    7,419.50x = 41,320,127.93
  5. Step 5: Solve for x
    x = 41,320,127.93/7,419.50
  6. Step 6: Final answer
    x = 5,569.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.