Home / 1,385.66-2,066.31-1,373.36

Finding the Fourth Proportional to 1,385.66, 2,066.31 and 1,373.36

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Solution

The fourth proportional to 1,385.66, 2,066.31 and 1,373.36 is: 2,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.66 : 2,066.31 = 1,373.36 : x
  2. Step 2: Convert to fraction form
    1,385.66/2,066.31 = 1,373.36/x
  3. Step 3: Cross multiply
    1,385.66x = 2,066.31 × 1,373.36
  4. Step 4: Simplify right side
    1,385.66x = 2,837,777.17
  5. Step 5: Solve for x
    x = 2,837,777.17/1,385.66
  6. Step 6: Final answer
    x = 2,047.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.