Home / 5,140.89-7,711.47-1,630.91

Finding the Fourth Proportional to 5,140.89, 7,711.47 and 1,630.91

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Solution

The fourth proportional to 5,140.89, 7,711.47 and 1,630.91 is: 2,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.89 : 7,711.47 = 1,630.91 : x
  2. Step 2: Convert to fraction form
    5,140.89/7,711.47 = 1,630.91/x
  3. Step 3: Cross multiply
    5,140.89x = 7,711.47 × 1,630.91
  4. Step 4: Simplify right side
    5,140.89x = 12,576,674.98
  5. Step 5: Solve for x
    x = 12,576,674.98/5,140.89
  6. Step 6: Final answer
    x = 2,446.40

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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.