Home / 8,717.81-12,030.65-5,180.33

Finding the Fourth Proportional to 8,717.81, 12,030.65 and 5,180.33

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Solution

The fourth proportional to 8,717.81, 12,030.65 and 5,180.33 is: 7,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.81 : 12,030.65 = 5,180.33 : x
  2. Step 2: Convert to fraction form
    8,717.81/12,030.65 = 5,180.33/x
  3. Step 3: Cross multiply
    8,717.81x = 12,030.65 × 5,180.33
  4. Step 4: Simplify right side
    8,717.81x = 62,322,780.14
  5. Step 5: Solve for x
    x = 62,322,780.14/8,717.81
  6. Step 6: Final answer
    x = 7,148.91

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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.