Home / 8,911.28-12,298.86-5,133.71

Finding the Fourth Proportional to 8,911.28, 12,298.86 and 5,133.71

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Solution

The fourth proportional to 8,911.28, 12,298.86 and 5,133.71 is: 7,085.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.28 : 12,298.86 = 5,133.71 : x
  2. Step 2: Convert to fraction form
    8,911.28/12,298.86 = 5,133.71/x
  3. Step 3: Cross multiply
    8,911.28x = 12,298.86 × 5,133.71
  4. Step 4: Simplify right side
    8,911.28x = 63,138,719.08
  5. Step 5: Solve for x
    x = 63,138,719.08/8,911.28
  6. Step 6: Final answer
    x = 7,085.26

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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.