Home / 8,991.24-12,407.88-5,012.40

Finding the Fourth Proportional to 8,991.24, 12,407.88 and 5,012.40

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Solution

The fourth proportional to 8,991.24, 12,407.88 and 5,012.40 is: 6,917.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.24 : 12,407.88 = 5,012.40 : x
  2. Step 2: Convert to fraction form
    8,991.24/12,407.88 = 5,012.40/x
  3. Step 3: Cross multiply
    8,991.24x = 12,407.88 × 5,012.40
  4. Step 4: Simplify right side
    8,991.24x = 62,193,257.71
  5. Step 5: Solve for x
    x = 62,193,257.71/8,991.24
  6. Step 6: Final answer
    x = 6,917.09

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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.