Home / 1,780.48-2,670.90-482.08

Finding the Fourth Proportional to 1,780.48, 2,670.90 and 482.08

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Solution

The fourth proportional to 1,780.48, 2,670.90 and 482.08 is: 723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.48 : 2,670.90 = 482.08 : x
  2. Step 2: Convert to fraction form
    1,780.48/2,670.90 = 482.08/x
  3. Step 3: Cross multiply
    1,780.48x = 2,670.90 × 482.08
  4. Step 4: Simplify right side
    1,780.48x = 1,287,587.47
  5. Step 5: Solve for x
    x = 1,287,587.47/1,780.48
  6. Step 6: Final answer
    x = 723.17

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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.