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Finding the Fourth Proportional to 8,281.64, 12,427.70 and 7,503.21

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Solution

The fourth proportional to 8,281.64, 12,427.70 and 7,503.21 is: 11,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.64 : 12,427.70 = 7,503.21 : x
  2. Step 2: Convert to fraction form
    8,281.64/12,427.70 = 7,503.21/x
  3. Step 3: Cross multiply
    8,281.64x = 12,427.70 × 7,503.21
  4. Step 4: Simplify right side
    8,281.64x = 93,247,605.40
  5. Step 5: Solve for x
    x = 93,247,605.40/8,281.64
  6. Step 6: Final answer
    x = 11,259.55

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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.