Home / 1,483.12-2,224.80-387.47

Finding the Fourth Proportional to 1,483.12, 2,224.80 and 387.47

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Solution

The fourth proportional to 1,483.12, 2,224.80 and 387.47 is: 581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,483.12 : 2,224.80 = 387.47 : x
  2. Step 2: Convert to fraction form
    1,483.12/2,224.80 = 387.47/x
  3. Step 3: Cross multiply
    1,483.12x = 2,224.80 × 387.47
  4. Step 4: Simplify right side
    1,483.12x = 862,048.82
  5. Step 5: Solve for x
    x = 862,048.82/1,483.12
  6. Step 6: Final answer
    x = 581.24

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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.