Home / 1,458.17-2,187.45-1,379.40

Finding the Fourth Proportional to 1,458.17, 2,187.45 and 1,379.40

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Solution

The fourth proportional to 1,458.17, 2,187.45 and 1,379.40 is: 2,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.17 : 2,187.45 = 1,379.40 : x
  2. Step 2: Convert to fraction form
    1,458.17/2,187.45 = 1,379.40/x
  3. Step 3: Cross multiply
    1,458.17x = 2,187.45 × 1,379.40
  4. Step 4: Simplify right side
    1,458.17x = 3,017,368.53
  5. Step 5: Solve for x
    x = 3,017,368.53/1,458.17
  6. Step 6: Final answer
    x = 2,069.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.