Home / 9,112.79-12,578.76-5,666.07

Finding the Fourth Proportional to 9,112.79, 12,578.76 and 5,666.07

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Solution

The fourth proportional to 9,112.79, 12,578.76 and 5,666.07 is: 7,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.79 : 12,578.76 = 5,666.07 : x
  2. Step 2: Convert to fraction form
    9,112.79/12,578.76 = 5,666.07/x
  3. Step 3: Cross multiply
    9,112.79x = 12,578.76 × 5,666.07
  4. Step 4: Simplify right side
    9,112.79x = 71,272,134.67
  5. Step 5: Solve for x
    x = 71,272,134.67/9,112.79
  6. Step 6: Final answer
    x = 7,821.11

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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.