Home / 2,547.21-3,512.31-2,445.15

Finding the Fourth Proportional to 2,547.21, 3,512.31 and 2,445.15

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Solution

The fourth proportional to 2,547.21, 3,512.31 and 2,445.15 is: 3,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.21 : 3,512.31 = 2,445.15 : x
  2. Step 2: Convert to fraction form
    2,547.21/3,512.31 = 2,445.15/x
  3. Step 3: Cross multiply
    2,547.21x = 3,512.31 × 2,445.15
  4. Step 4: Simplify right side
    2,547.21x = 8,588,142.55
  5. Step 5: Solve for x
    x = 8,588,142.55/2,547.21
  6. Step 6: Final answer
    x = 3,371.58

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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.