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Finding the Fourth Proportional to 8,878.16, 12,303.66 and 8,752.88

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Solution

The fourth proportional to 8,878.16, 12,303.66 and 8,752.88 is: 12,130.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.16 : 12,303.66 = 8,752.88 : x
  2. Step 2: Convert to fraction form
    8,878.16/12,303.66 = 8,752.88/x
  3. Step 3: Cross multiply
    8,878.16x = 12,303.66 × 8,752.88
  4. Step 4: Simplify right side
    8,878.16x = 107,692,415.78
  5. Step 5: Solve for x
    x = 107,692,415.78/8,878.16
  6. Step 6: Final answer
    x = 12,130.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.