Home / 8,660.27-12,990.47-4,762.55

Finding the Fourth Proportional to 8,660.27, 12,990.47 and 4,762.55

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Solution

The fourth proportional to 8,660.27, 12,990.47 and 4,762.55 is: 7,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.27 : 12,990.47 = 4,762.55 : x
  2. Step 2: Convert to fraction form
    8,660.27/12,990.47 = 4,762.55/x
  3. Step 3: Cross multiply
    8,660.27x = 12,990.47 × 4,762.55
  4. Step 4: Simplify right side
    8,660.27x = 61,867,674.13
  5. Step 5: Solve for x
    x = 61,867,674.13/8,660.27
  6. Step 6: Final answer
    x = 7,143.85

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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.