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Finding the Fourth Proportional to 6,407.40, 8,829.09 and 4,726.15

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Solution

The fourth proportional to 6,407.40, 8,829.09 and 4,726.15 is: 6,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.40 : 8,829.09 = 4,726.15 : x
  2. Step 2: Convert to fraction form
    6,407.40/8,829.09 = 4,726.15/x
  3. Step 3: Cross multiply
    6,407.40x = 8,829.09 × 4,726.15
  4. Step 4: Simplify right side
    6,407.40x = 41,727,581.63
  5. Step 5: Solve for x
    x = 41,727,581.63/6,407.40
  6. Step 6: Final answer
    x = 6,512.40

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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.