Home / 3,260.70-4,888.17-1,311.57

Finding the Fourth Proportional to 3,260.70, 4,888.17 and 1,311.57

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Solution

The fourth proportional to 3,260.70, 4,888.17 and 1,311.57 is: 1,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.70 : 4,888.17 = 1,311.57 : x
  2. Step 2: Convert to fraction form
    3,260.70/4,888.17 = 1,311.57/x
  3. Step 3: Cross multiply
    3,260.70x = 4,888.17 × 1,311.57
  4. Step 4: Simplify right side
    3,260.70x = 6,411,177.13
  5. Step 5: Solve for x
    x = 6,411,177.13/3,260.70
  6. Step 6: Final answer
    x = 1,966.20

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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.