Home / 1,868.60-2,579.15-1,122.59

Finding the Fourth Proportional to 1,868.60, 2,579.15 and 1,122.59

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Solution

The fourth proportional to 1,868.60, 2,579.15 and 1,122.59 is: 1,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.60 : 2,579.15 = 1,122.59 : x
  2. Step 2: Convert to fraction form
    1,868.60/2,579.15 = 1,122.59/x
  3. Step 3: Cross multiply
    1,868.60x = 2,579.15 × 1,122.59
  4. Step 4: Simplify right side
    1,868.60x = 2,895,328.00
  5. Step 5: Solve for x
    x = 2,895,328.00/1,868.60
  6. Step 6: Final answer
    x = 1,549.46

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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.