Home / 8,639.71-11,923.76-4,862.99

Finding the Fourth Proportional to 8,639.71, 11,923.76 and 4,862.99

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Solution

The fourth proportional to 8,639.71, 11,923.76 and 4,862.99 is: 6,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.71 : 11,923.76 = 4,862.99 : x
  2. Step 2: Convert to fraction form
    8,639.71/11,923.76 = 4,862.99/x
  3. Step 3: Cross multiply
    8,639.71x = 11,923.76 × 4,862.99
  4. Step 4: Simplify right side
    8,639.71x = 57,985,125.64
  5. Step 5: Solve for x
    x = 57,985,125.64/8,639.71
  6. Step 6: Final answer
    x = 6,711.47

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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.