Home / 1,541.40-2,127.28-1,045.08

Finding the Fourth Proportional to 1,541.40, 2,127.28 and 1,045.08

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Solution

The fourth proportional to 1,541.40, 2,127.28 and 1,045.08 is: 1,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.40 : 2,127.28 = 1,045.08 : x
  2. Step 2: Convert to fraction form
    1,541.40/2,127.28 = 1,045.08/x
  3. Step 3: Cross multiply
    1,541.40x = 2,127.28 × 1,045.08
  4. Step 4: Simplify right side
    1,541.40x = 2,223,177.78
  5. Step 5: Solve for x
    x = 2,223,177.78/1,541.40
  6. Step 6: Final answer
    x = 1,442.31

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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.