Home / 2,818.10-3,889.08-1,542.06

Finding the Fourth Proportional to 2,818.10, 3,889.08 and 1,542.06

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Solution

The fourth proportional to 2,818.10, 3,889.08 and 1,542.06 is: 2,128.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.10 : 3,889.08 = 1,542.06 : x
  2. Step 2: Convert to fraction form
    2,818.10/3,889.08 = 1,542.06/x
  3. Step 3: Cross multiply
    2,818.10x = 3,889.08 × 1,542.06
  4. Step 4: Simplify right side
    2,818.10x = 5,997,209.75
  5. Step 5: Solve for x
    x = 5,997,209.75/2,818.10
  6. Step 6: Final answer
    x = 2,128.11

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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.