Home / 5,186.15-7,780.38-1,488.10

Finding the Fourth Proportional to 5,186.15, 7,780.38 and 1,488.10

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Solution

The fourth proportional to 5,186.15, 7,780.38 and 1,488.10 is: 2,232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.15 : 7,780.38 = 1,488.10 : x
  2. Step 2: Convert to fraction form
    5,186.15/7,780.38 = 1,488.10/x
  3. Step 3: Cross multiply
    5,186.15x = 7,780.38 × 1,488.10
  4. Step 4: Simplify right side
    5,186.15x = 11,577,937.14
  5. Step 5: Solve for x
    x = 11,577,937.14/5,186.15
  6. Step 6: Final answer
    x = 2,232.47

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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.