Home / 1,426.32-2,130.75-1,138.08

Finding the Fourth Proportional to 1,426.32, 2,130.75 and 1,138.08

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Solution

The fourth proportional to 1,426.32, 2,130.75 and 1,138.08 is: 1,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.32 : 2,130.75 = 1,138.08 : x
  2. Step 2: Convert to fraction form
    1,426.32/2,130.75 = 1,138.08/x
  3. Step 3: Cross multiply
    1,426.32x = 2,130.75 × 1,138.08
  4. Step 4: Simplify right side
    1,426.32x = 2,424,963.96
  5. Step 5: Solve for x
    x = 2,424,963.96/1,426.32
  6. Step 6: Final answer
    x = 1,700.15

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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.