Home / 8,100.18-11,176.65-5,120.10

Finding the Fourth Proportional to 8,100.18, 11,176.65 and 5,120.10

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Solution

The fourth proportional to 8,100.18, 11,176.65 and 5,120.10 is: 7,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.18 : 11,176.65 = 5,120.10 : x
  2. Step 2: Convert to fraction form
    8,100.18/11,176.65 = 5,120.10/x
  3. Step 3: Cross multiply
    8,100.18x = 11,176.65 × 5,120.10
  4. Step 4: Simplify right side
    8,100.18x = 57,225,565.67
  5. Step 5: Solve for x
    x = 57,225,565.67/8,100.18
  6. Step 6: Final answer
    x = 7,064.73

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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.