Home / 4,897.45-7,345.87-1,387.31

Finding the Fourth Proportional to 4,897.45, 7,345.87 and 1,387.31

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Solution

The fourth proportional to 4,897.45, 7,345.87 and 1,387.31 is: 2,080.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,897.45 : 7,345.87 = 1,387.31 : x
  2. Step 2: Convert to fraction form
    4,897.45/7,345.87 = 1,387.31/x
  3. Step 3: Cross multiply
    4,897.45x = 7,345.87 × 1,387.31
  4. Step 4: Simplify right side
    4,897.45x = 10,190,998.91
  5. Step 5: Solve for x
    x = 10,190,998.91/4,897.45
  6. Step 6: Final answer
    x = 2,080.88

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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.