Home / 3,145.55-4,340.96-1,729.29

Finding the Fourth Proportional to 3,145.55, 4,340.96 and 1,729.29

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Solution

The fourth proportional to 3,145.55, 4,340.96 and 1,729.29 is: 2,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.55 : 4,340.96 = 1,729.29 : x
  2. Step 2: Convert to fraction form
    3,145.55/4,340.96 = 1,729.29/x
  3. Step 3: Cross multiply
    3,145.55x = 4,340.96 × 1,729.29
  4. Step 4: Simplify right side
    3,145.55x = 7,506,792.84
  5. Step 5: Solve for x
    x = 7,506,792.84/3,145.55
  6. Step 6: Final answer
    x = 2,386.48

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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.