Home / 2,865.96-4,298.82-918.12

Finding the Fourth Proportional to 2,865.96, 4,298.82 and 918.12

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Solution

The fourth proportional to 2,865.96, 4,298.82 and 918.12 is: 1,377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.96 : 4,298.82 = 918.12 : x
  2. Step 2: Convert to fraction form
    2,865.96/4,298.82 = 918.12/x
  3. Step 3: Cross multiply
    2,865.96x = 4,298.82 × 918.12
  4. Step 4: Simplify right side
    2,865.96x = 3,946,832.62
  5. Step 5: Solve for x
    x = 3,946,832.62/2,865.96
  6. Step 6: Final answer
    x = 1,377.14

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1.5x scale

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.