Home / 9,615.16-13,259.19-6,428.41

Finding the Fourth Proportional to 9,615.16, 13,259.19 and 6,428.41

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Solution

The fourth proportional to 9,615.16, 13,259.19 and 6,428.41 is: 8,864.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,615.16 : 13,259.19 = 6,428.41 : x
  2. Step 2: Convert to fraction form
    9,615.16/13,259.19 = 6,428.41/x
  3. Step 3: Cross multiply
    9,615.16x = 13,259.19 × 6,428.41
  4. Step 4: Simplify right side
    9,615.16x = 85,235,575.13
  5. Step 5: Solve for x
    x = 85,235,575.13/9,615.16
  6. Step 6: Final answer
    x = 8,864.71

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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.