Home / 1,425.11-2,130.36-1,097.06

Finding the Fourth Proportional to 1,425.11, 2,130.36 and 1,097.06

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Solution

The fourth proportional to 1,425.11, 2,130.36 and 1,097.06 is: 1,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.11 : 2,130.36 = 1,097.06 : x
  2. Step 2: Convert to fraction form
    1,425.11/2,130.36 = 1,097.06/x
  3. Step 3: Cross multiply
    1,425.11x = 2,130.36 × 1,097.06
  4. Step 4: Simplify right side
    1,425.11x = 2,337,117.98
  5. Step 5: Solve for x
    x = 2,337,117.98/1,425.11
  6. Step 6: Final answer
    x = 1,639.96

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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.