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Finding the Fourth Proportional to 8,607.90, 12,895.65 and 4,433.70

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Solution

The fourth proportional to 8,607.90, 12,895.65 and 4,433.70 is: 6,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.90 : 12,895.65 = 4,433.70 : x
  2. Step 2: Convert to fraction form
    8,607.90/12,895.65 = 4,433.70/x
  3. Step 3: Cross multiply
    8,607.90x = 12,895.65 × 4,433.70
  4. Step 4: Simplify right side
    8,607.90x = 57,175,443.41
  5. Step 5: Solve for x
    x = 57,175,443.41/8,607.90
  6. Step 6: Final answer
    x = 6,642.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.