Home / 3,139,000.20-4,333,136.40-2,121,782.76

Finding the Fourth Proportional to 3,139,000.20, 4,333,136.40 and 2,121,782.76

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Solution

The fourth proportional to 3,139,000.20, 4,333,136.40 and 2,121,782.76 is: 2,928,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139,000.20 : 4,333,136.40 = 2,121,782.76 : x
  2. Step 2: Convert to fraction form
    3,139,000.20/4,333,136.40 = 2,121,782.76/x
  3. Step 3: Cross multiply
    3,139,000.20x = 4,333,136.40 × 2,121,782.76
  4. Step 4: Simplify right side
    3,139,000.20x = 9,193,974,110,248.46
  5. Step 5: Solve for x
    x = 9,193,974,110,248.46/3,139,000.20
  6. Step 6: Final answer
    x = 2,928,949.83

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Double scale
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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.