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Finding the Fourth Proportional to 6,398.10, 8,829.35 and 3,565.45

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Solution

The fourth proportional to 6,398.10, 8,829.35 and 3,565.45 is: 4,920.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.10 : 8,829.35 = 3,565.45 : x
  2. Step 2: Convert to fraction form
    6,398.10/8,829.35 = 3,565.45/x
  3. Step 3: Cross multiply
    6,398.10x = 8,829.35 × 3,565.45
  4. Step 4: Simplify right side
    6,398.10x = 31,480,632.59
  5. Step 5: Solve for x
    x = 31,480,632.59/6,398.10
  6. Step 6: Final answer
    x = 4,920.31

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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.