Home / 1,541.29-2,312.40-720.04

Finding the Fourth Proportional to 1,541.29, 2,312.40 and 720.04

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Solution

The fourth proportional to 1,541.29, 2,312.40 and 720.04 is: 1,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.29 : 2,312.40 = 720.04 : x
  2. Step 2: Convert to fraction form
    1,541.29/2,312.40 = 720.04/x
  3. Step 3: Cross multiply
    1,541.29x = 2,312.40 × 720.04
  4. Step 4: Simplify right side
    1,541.29x = 1,665,020.50
  5. Step 5: Solve for x
    x = 1,665,020.50/1,541.29
  6. Step 6: Final answer
    x = 1,080.28

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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.