Home / 8,749.30-13,123.95-3,200.80

Finding the Fourth Proportional to 8,749.30, 13,123.95 and 3,200.80

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Solution

The fourth proportional to 8,749.30, 13,123.95 and 3,200.80 is: 4,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.30 : 13,123.95 = 3,200.80 : x
  2. Step 2: Convert to fraction form
    8,749.30/13,123.95 = 3,200.80/x
  3. Step 3: Cross multiply
    8,749.30x = 13,123.95 × 3,200.80
  4. Step 4: Simplify right side
    8,749.30x = 42,007,139.16
  5. Step 5: Solve for x
    x = 42,007,139.16/8,749.30
  6. Step 6: Final answer
    x = 4,801.20

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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.