Home / 2,230.17-3,077.60-1,390.46

Finding the Fourth Proportional to 2,230.17, 3,077.60 and 1,390.46

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Solution

The fourth proportional to 2,230.17, 3,077.60 and 1,390.46 is: 1,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.17 : 3,077.60 = 1,390.46 : x
  2. Step 2: Convert to fraction form
    2,230.17/3,077.60 = 1,390.46/x
  3. Step 3: Cross multiply
    2,230.17x = 3,077.60 × 1,390.46
  4. Step 4: Simplify right side
    2,230.17x = 4,279,257.36
  5. Step 5: Solve for x
    x = 4,279,257.36/2,230.17
  6. Step 6: Final answer
    x = 1,918.80

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1.5x scale

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.