Home / 8,702.16-12,011.87-5,520.75

Finding the Fourth Proportional to 8,702.16, 12,011.87 and 5,520.75

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Solution

The fourth proportional to 8,702.16, 12,011.87 and 5,520.75 is: 7,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.16 : 12,011.87 = 5,520.75 : x
  2. Step 2: Convert to fraction form
    8,702.16/12,011.87 = 5,520.75/x
  3. Step 3: Cross multiply
    8,702.16x = 12,011.87 × 5,520.75
  4. Step 4: Simplify right side
    8,702.16x = 66,314,503.70
  5. Step 5: Solve for x
    x = 66,314,503.70/8,702.16
  6. Step 6: Final answer
    x = 7,620.46

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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.