Home / 5,143.40-7,677.84-4,520.60

Finding the Fourth Proportional to 5,143.40, 7,677.84 and 4,520.60

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Solution

The fourth proportional to 5,143.40, 7,677.84 and 4,520.60 is: 6,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.40 : 7,677.84 = 4,520.60 : x
  2. Step 2: Convert to fraction form
    5,143.40/7,677.84 = 4,520.60/x
  3. Step 3: Cross multiply
    5,143.40x = 7,677.84 × 4,520.60
  4. Step 4: Simplify right side
    5,143.40x = 34,708,443.50
  5. Step 5: Solve for x
    x = 34,708,443.50/5,143.40
  6. Step 6: Final answer
    x = 6,748.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.