Home / 8,918.02-12,306.88-5,558.84

Finding the Fourth Proportional to 8,918.02, 12,306.88 and 5,558.84

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Solution

The fourth proportional to 8,918.02, 12,306.88 and 5,558.84 is: 7,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.02 : 12,306.88 = 5,558.84 : x
  2. Step 2: Convert to fraction form
    8,918.02/12,306.88 = 5,558.84/x
  3. Step 3: Cross multiply
    8,918.02x = 12,306.88 × 5,558.84
  4. Step 4: Simplify right side
    8,918.02x = 68,411,976.82
  5. Step 5: Solve for x
    x = 68,411,976.82/8,918.02
  6. Step 6: Final answer
    x = 7,671.21

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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.