Home / 3,147.79-4,343.29-1,888.51

Finding the Fourth Proportional to 3,147.79, 4,343.29 and 1,888.51

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Solution

The fourth proportional to 3,147.79, 4,343.29 and 1,888.51 is: 2,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.79 : 4,343.29 = 1,888.51 : x
  2. Step 2: Convert to fraction form
    3,147.79/4,343.29 = 1,888.51/x
  3. Step 3: Cross multiply
    3,147.79x = 4,343.29 × 1,888.51
  4. Step 4: Simplify right side
    3,147.79x = 8,202,331.02
  5. Step 5: Solve for x
    x = 8,202,331.02/3,147.79
  6. Step 6: Final answer
    x = 2,605.74

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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.