Home / 3,125.11-4,312.47-1,708.53

Finding the Fourth Proportional to 3,125.11, 4,312.47 and 1,708.53

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Solution

The fourth proportional to 3,125.11, 4,312.47 and 1,708.53 is: 2,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.11 : 4,312.47 = 1,708.53 : x
  2. Step 2: Convert to fraction form
    3,125.11/4,312.47 = 1,708.53/x
  3. Step 3: Cross multiply
    3,125.11x = 4,312.47 × 1,708.53
  4. Step 4: Simplify right side
    3,125.11x = 7,368,001.89
  5. Step 5: Solve for x
    x = 7,368,001.89/3,125.11
  6. Step 6: Final answer
    x = 2,357.68

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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.