Home / 3,507.84-5,261.76-1,428.72

Finding the Fourth Proportional to 3,507.84, 5,261.76 and 1,428.72

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Solution

The fourth proportional to 3,507.84, 5,261.76 and 1,428.72 is: 2,143.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.84 : 5,261.76 = 1,428.72 : x
  2. Step 2: Convert to fraction form
    3,507.84/5,261.76 = 1,428.72/x
  3. Step 3: Cross multiply
    3,507.84x = 5,261.76 × 1,428.72
  4. Step 4: Simplify right side
    3,507.84x = 7,517,581.75
  5. Step 5: Solve for x
    x = 7,517,581.75/3,507.84
  6. Step 6: Final answer
    x = 2,143.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.