Home / 3,125.44-4,312.12-1,780.96

Finding the Fourth Proportional to 3,125.44, 4,312.12 and 1,780.96

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Solution

The fourth proportional to 3,125.44, 4,312.12 and 1,780.96 is: 2,457.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.44 : 4,312.12 = 1,780.96 : x
  2. Step 2: Convert to fraction form
    3,125.44/4,312.12 = 1,780.96/x
  3. Step 3: Cross multiply
    3,125.44x = 4,312.12 × 1,780.96
  4. Step 4: Simplify right side
    3,125.44x = 7,679,713.24
  5. Step 5: Solve for x
    x = 7,679,713.24/3,125.44
  6. Step 6: Final answer
    x = 2,457.16

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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.