Home / 9,178.86-12,666.69-5,402.46

Finding the Fourth Proportional to 9,178.86, 12,666.69 and 5,402.46

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Solution

The fourth proportional to 9,178.86, 12,666.69 and 5,402.46 is: 7,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.86 : 12,666.69 = 5,402.46 : x
  2. Step 2: Convert to fraction form
    9,178.86/12,666.69 = 5,402.46/x
  3. Step 3: Cross multiply
    9,178.86x = 12,666.69 × 5,402.46
  4. Step 4: Simplify right side
    9,178.86x = 68,431,286.06
  5. Step 5: Solve for x
    x = 68,431,286.06/9,178.86
  6. Step 6: Final answer
    x = 7,455.31

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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.