Home / 8,528.40-12,778.20-5,605.20

Finding the Fourth Proportional to 8,528.40, 12,778.20 and 5,605.20

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Solution

The fourth proportional to 8,528.40, 12,778.20 and 5,605.20 is: 8,398.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.40 : 12,778.20 = 5,605.20 : x
  2. Step 2: Convert to fraction form
    8,528.40/12,778.20 = 5,605.20/x
  3. Step 3: Cross multiply
    8,528.40x = 12,778.20 × 5,605.20
  4. Step 4: Simplify right side
    8,528.40x = 71,624,366.64
  5. Step 5: Solve for x
    x = 71,624,366.64/8,528.40
  6. Step 6: Final answer
    x = 8,398.34

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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.