Home / 2,985.12-4,116.42-2,145.96

Finding the Fourth Proportional to 2,985.12, 4,116.42 and 2,145.96

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Solution

The fourth proportional to 2,985.12, 4,116.42 and 2,145.96 is: 2,959.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.12 : 4,116.42 = 2,145.96 : x
  2. Step 2: Convert to fraction form
    2,985.12/4,116.42 = 2,145.96/x
  3. Step 3: Cross multiply
    2,985.12x = 4,116.42 × 2,145.96
  4. Step 4: Simplify right side
    2,985.12x = 8,833,672.66
  5. Step 5: Solve for x
    x = 8,833,672.66/2,985.12
  6. Step 6: Final answer
    x = 2,959.24

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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.