Home / 8,989.86-12,406.32-5,011.18

Finding the Fourth Proportional to 8,989.86, 12,406.32 and 5,011.18

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Solution

The fourth proportional to 8,989.86, 12,406.32 and 5,011.18 is: 6,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.86 : 12,406.32 = 5,011.18 : x
  2. Step 2: Convert to fraction form
    8,989.86/12,406.32 = 5,011.18/x
  3. Step 3: Cross multiply
    8,989.86x = 12,406.32 × 5,011.18
  4. Step 4: Simplify right side
    8,989.86x = 62,170,302.66
  5. Step 5: Solve for x
    x = 62,170,302.66/8,989.86
  6. Step 6: Final answer
    x = 6,915.60

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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.