Home / 8,317.42-12,472.47-3,119.65

Finding the Fourth Proportional to 8,317.42, 12,472.47 and 3,119.65

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Solution

The fourth proportional to 8,317.42, 12,472.47 and 3,119.65 is: 4,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.42 : 12,472.47 = 3,119.65 : x
  2. Step 2: Convert to fraction form
    8,317.42/12,472.47 = 3,119.65/x
  3. Step 3: Cross multiply
    8,317.42x = 12,472.47 × 3,119.65
  4. Step 4: Simplify right side
    8,317.42x = 38,909,741.04
  5. Step 5: Solve for x
    x = 38,909,741.04/8,317.42
  6. Step 6: Final answer
    x = 4,678.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.