Home / 8,754.51-12,080.21-4,978.11

Finding the Fourth Proportional to 8,754.51, 12,080.21 and 4,978.11

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Solution

The fourth proportional to 8,754.51, 12,080.21 and 4,978.11 is: 6,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.51 : 12,080.21 = 4,978.11 : x
  2. Step 2: Convert to fraction form
    8,754.51/12,080.21 = 4,978.11/x
  3. Step 3: Cross multiply
    8,754.51x = 12,080.21 × 4,978.11
  4. Step 4: Simplify right side
    8,754.51x = 60,136,589.31
  5. Step 5: Solve for x
    x = 60,136,589.31/8,754.51
  6. Step 6: Final answer
    x = 6,869.21

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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.