Home / 8,719.12-12,042.21-5,881.56

Finding the Fourth Proportional to 8,719.12, 12,042.21 and 5,881.56

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Solution

The fourth proportional to 8,719.12, 12,042.21 and 5,881.56 is: 8,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.12 : 12,042.21 = 5,881.56 : x
  2. Step 2: Convert to fraction form
    8,719.12/12,042.21 = 5,881.56/x
  3. Step 3: Cross multiply
    8,719.12x = 12,042.21 × 5,881.56
  4. Step 4: Simplify right side
    8,719.12x = 70,826,980.65
  5. Step 5: Solve for x
    x = 70,826,980.65/8,719.12
  6. Step 6: Final answer
    x = 8,123.18

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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.