Home / 9,638.64-13,301.28-5,389.92

Finding the Fourth Proportional to 9,638.64, 13,301.28 and 5,389.92

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Solution

The fourth proportional to 9,638.64, 13,301.28 and 5,389.92 is: 7,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,638.64 : 13,301.28 = 5,389.92 : x
  2. Step 2: Convert to fraction form
    9,638.64/13,301.28 = 5,389.92/x
  3. Step 3: Cross multiply
    9,638.64x = 13,301.28 × 5,389.92
  4. Step 4: Simplify right side
    9,638.64x = 71,692,835.10
  5. Step 5: Solve for x
    x = 71,692,835.10/9,638.64
  6. Step 6: Final answer
    x = 7,438.07

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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.