Home / 8,419.35-11,618.76-4,642.65

Finding the Fourth Proportional to 8,419.35, 11,618.76 and 4,642.65

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Solution

The fourth proportional to 8,419.35, 11,618.76 and 4,642.65 is: 6,406.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.35 : 11,618.76 = 4,642.65 : x
  2. Step 2: Convert to fraction form
    8,419.35/11,618.76 = 4,642.65/x
  3. Step 3: Cross multiply
    8,419.35x = 11,618.76 × 4,642.65
  4. Step 4: Simplify right side
    8,419.35x = 53,941,836.11
  5. Step 5: Solve for x
    x = 53,941,836.11/8,419.35
  6. Step 6: Final answer
    x = 6,406.89

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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.