Home / 1,867.48-2,801.18-480.80

Finding the Fourth Proportional to 1,867.48, 2,801.18 and 480.80

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Solution

The fourth proportional to 1,867.48, 2,801.18 and 480.80 is: 721.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.48 : 2,801.18 = 480.80 : x
  2. Step 2: Convert to fraction form
    1,867.48/2,801.18 = 480.80/x
  3. Step 3: Cross multiply
    1,867.48x = 2,801.18 × 480.80
  4. Step 4: Simplify right side
    1,867.48x = 1,346,807.34
  5. Step 5: Solve for x
    x = 1,346,807.34/1,867.48
  6. Step 6: Final answer
    x = 721.19

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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.