Home / 8,302.20-12,454.70-2,459.40

Finding the Fourth Proportional to 8,302.20, 12,454.70 and 2,459.40

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Solution

The fourth proportional to 8,302.20, 12,454.70 and 2,459.40 is: 3,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,302.20 : 12,454.70 = 2,459.40 : x
  2. Step 2: Convert to fraction form
    8,302.20/12,454.70 = 2,459.40/x
  3. Step 3: Cross multiply
    8,302.20x = 12,454.70 × 2,459.40
  4. Step 4: Simplify right side
    8,302.20x = 30,631,089.18
  5. Step 5: Solve for x
    x = 30,631,089.18/8,302.20
  6. Step 6: Final answer
    x = 3,689.51

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Double scale
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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.