Home / 1,943.04-2,681.40-1,115.04

Finding the Fourth Proportional to 1,943.04, 2,681.40 and 1,115.04

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Solution

The fourth proportional to 1,943.04, 2,681.40 and 1,115.04 is: 1,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.04 : 2,681.40 = 1,115.04 : x
  2. Step 2: Convert to fraction form
    1,943.04/2,681.40 = 1,115.04/x
  3. Step 3: Cross multiply
    1,943.04x = 2,681.40 × 1,115.04
  4. Step 4: Simplify right side
    1,943.04x = 2,989,868.26
  5. Step 5: Solve for x
    x = 2,989,868.26/1,943.04
  6. Step 6: Final answer
    x = 1,538.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.