Home / 8,911.75-12,298.03-5,134.69

Finding the Fourth Proportional to 8,911.75, 12,298.03 and 5,134.69

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Solution

The fourth proportional to 8,911.75, 12,298.03 and 5,134.69 is: 7,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.75 : 12,298.03 = 5,134.69 : x
  2. Step 2: Convert to fraction form
    8,911.75/12,298.03 = 5,134.69/x
  3. Step 3: Cross multiply
    8,911.75x = 12,298.03 × 5,134.69
  4. Step 4: Simplify right side
    8,911.75x = 63,146,541.80
  5. Step 5: Solve for x
    x = 63,146,541.80/8,911.75
  6. Step 6: Final answer
    x = 7,085.76

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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.