Home / 8,178.13-11,287.29-4,820.74

Finding the Fourth Proportional to 8,178.13, 11,287.29 and 4,820.74

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Solution

The fourth proportional to 8,178.13, 11,287.29 and 4,820.74 is: 6,653.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.13 : 11,287.29 = 4,820.74 : x
  2. Step 2: Convert to fraction form
    8,178.13/11,287.29 = 4,820.74/x
  3. Step 3: Cross multiply
    8,178.13x = 11,287.29 × 4,820.74
  4. Step 4: Simplify right side
    8,178.13x = 54,413,066.29
  5. Step 5: Solve for x
    x = 54,413,066.29/8,178.13
  6. Step 6: Final answer
    x = 6,653.49

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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.