Home / 2,810.16-4,214.87-862.20

Finding the Fourth Proportional to 2,810.16, 4,214.87 and 862.20

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Solution

The fourth proportional to 2,810.16, 4,214.87 and 862.20 is: 1,293.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.16 : 4,214.87 = 862.20 : x
  2. Step 2: Convert to fraction form
    2,810.16/4,214.87 = 862.20/x
  3. Step 3: Cross multiply
    2,810.16x = 4,214.87 × 862.20
  4. Step 4: Simplify right side
    2,810.16x = 3,634,060.91
  5. Step 5: Solve for x
    x = 3,634,060.91/2,810.16
  6. Step 6: Final answer
    x = 1,293.19

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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.