Home / 3,712.51-5,123.28-2,140.57

Finding the Fourth Proportional to 3,712.51, 5,123.28 and 2,140.57

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Solution

The fourth proportional to 3,712.51, 5,123.28 and 2,140.57 is: 2,954.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.51 : 5,123.28 = 2,140.57 : x
  2. Step 2: Convert to fraction form
    3,712.51/5,123.28 = 2,140.57/x
  3. Step 3: Cross multiply
    3,712.51x = 5,123.28 × 2,140.57
  4. Step 4: Simplify right side
    3,712.51x = 10,966,739.47
  5. Step 5: Solve for x
    x = 10,966,739.47/3,712.51
  6. Step 6: Final answer
    x = 2,954.00

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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.