Home / 4,080.78-5,631.63-2,312.58

Finding the Fourth Proportional to 4,080.78, 5,631.63 and 2,312.58

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Solution

The fourth proportional to 4,080.78, 5,631.63 and 2,312.58 is: 3,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.78 : 5,631.63 = 2,312.58 : x
  2. Step 2: Convert to fraction form
    4,080.78/5,631.63 = 2,312.58/x
  3. Step 3: Cross multiply
    4,080.78x = 5,631.63 × 2,312.58
  4. Step 4: Simplify right side
    4,080.78x = 13,023,594.91
  5. Step 5: Solve for x
    x = 13,023,594.91/4,080.78
  6. Step 6: Final answer
    x = 3,191.45

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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.