Home / 8,678.59-11,973.83-5,320.18

Finding the Fourth Proportional to 8,678.59, 11,973.83 and 5,320.18

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Solution

The fourth proportional to 8,678.59, 11,973.83 and 5,320.18 is: 7,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.59 : 11,973.83 = 5,320.18 : x
  2. Step 2: Convert to fraction form
    8,678.59/11,973.83 = 5,320.18/x
  3. Step 3: Cross multiply
    8,678.59x = 11,973.83 × 5,320.18
  4. Step 4: Simplify right side
    8,678.59x = 63,702,919.26
  5. Step 5: Solve for x
    x = 63,702,919.26/8,678.59
  6. Step 6: Final answer
    x = 7,340.24

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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.