Home / 8,281.51-12,418.62-4,385.01

Finding the Fourth Proportional to 8,281.51, 12,418.62 and 4,385.01

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Solution

The fourth proportional to 8,281.51, 12,418.62 and 4,385.01 is: 6,575.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.51 : 12,418.62 = 4,385.01 : x
  2. Step 2: Convert to fraction form
    8,281.51/12,418.62 = 4,385.01/x
  3. Step 3: Cross multiply
    8,281.51x = 12,418.62 × 4,385.01
  4. Step 4: Simplify right side
    8,281.51x = 54,455,772.89
  5. Step 5: Solve for x
    x = 54,455,772.89/8,281.51
  6. Step 6: Final answer
    x = 6,575.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.