Home / 1,581.04-2,371.49-485.35

Finding the Fourth Proportional to 1,581.04, 2,371.49 and 485.35

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Solution

The fourth proportional to 1,581.04, 2,371.49 and 485.35 is: 728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.04 : 2,371.49 = 485.35 : x
  2. Step 2: Convert to fraction form
    1,581.04/2,371.49 = 485.35/x
  3. Step 3: Cross multiply
    1,581.04x = 2,371.49 × 485.35
  4. Step 4: Simplify right side
    1,581.04x = 1,151,002.67
  5. Step 5: Solve for x
    x = 1,151,002.67/1,581.04
  6. Step 6: Final answer
    x = 728.00

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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.