Home / 9,419.13-12,998.28-5,440.16

Finding the Fourth Proportional to 9,419.13, 12,998.28 and 5,440.16

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Solution

The fourth proportional to 9,419.13, 12,998.28 and 5,440.16 is: 7,507.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.13 : 12,998.28 = 5,440.16 : x
  2. Step 2: Convert to fraction form
    9,419.13/12,998.28 = 5,440.16/x
  3. Step 3: Cross multiply
    9,419.13x = 12,998.28 × 5,440.16
  4. Step 4: Simplify right side
    9,419.13x = 70,712,722.92
  5. Step 5: Solve for x
    x = 70,712,722.92/9,419.13
  6. Step 6: Final answer
    x = 7,507.35

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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.