Home / 1,377.40-1,899.34-1,042.06

Finding the Fourth Proportional to 1,377.40, 1,899.34 and 1,042.06

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Solution

The fourth proportional to 1,377.40, 1,899.34 and 1,042.06 is: 1,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.40 : 1,899.34 = 1,042.06 : x
  2. Step 2: Convert to fraction form
    1,377.40/1,899.34 = 1,042.06/x
  3. Step 3: Cross multiply
    1,377.40x = 1,899.34 × 1,042.06
  4. Step 4: Simplify right side
    1,377.40x = 1,979,226.24
  5. Step 5: Solve for x
    x = 1,979,226.24/1,377.40
  6. Step 6: Final answer
    x = 1,436.93

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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.