Home / 2,865.40-4,298.10-1,018.60

Finding the Fourth Proportional to 2,865.40, 4,298.10 and 1,018.60

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Solution

The fourth proportional to 2,865.40, 4,298.10 and 1,018.60 is: 1,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.40 : 4,298.10 = 1,018.60 : x
  2. Step 2: Convert to fraction form
    2,865.40/4,298.10 = 1,018.60/x
  3. Step 3: Cross multiply
    2,865.40x = 4,298.10 × 1,018.60
  4. Step 4: Simplify right side
    2,865.40x = 4,378,044.66
  5. Step 5: Solve for x
    x = 4,378,044.66/2,865.40
  6. Step 6: Final answer
    x = 1,527.90

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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.