Home / 11,581.08-15,981.86-6,275.91

Finding the Fourth Proportional to 11,581.08, 15,981.86 and 6,275.91

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Solution

The fourth proportional to 11,581.08, 15,981.86 and 6,275.91 is: 8,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.08 : 15,981.86 = 6,275.91 : x
  2. Step 2: Convert to fraction form
    11,581.08/15,981.86 = 6,275.91/x
  3. Step 3: Cross multiply
    11,581.08x = 15,981.86 × 6,275.91
  4. Step 4: Simplify right side
    11,581.08x = 100,300,683.61
  5. Step 5: Solve for x
    x = 100,300,683.61/11,581.08
  6. Step 6: Final answer
    x = 8,660.74

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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.