Home / 5,312.90-7,969.34-1,615.14

Finding the Fourth Proportional to 5,312.90, 7,969.34 and 1,615.14

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Solution

The fourth proportional to 5,312.90, 7,969.34 and 1,615.14 is: 2,422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.90 : 7,969.34 = 1,615.14 : x
  2. Step 2: Convert to fraction form
    5,312.90/7,969.34 = 1,615.14/x
  3. Step 3: Cross multiply
    5,312.90x = 7,969.34 × 1,615.14
  4. Step 4: Simplify right side
    5,312.90x = 12,871,591.73
  5. Step 5: Solve for x
    x = 12,871,591.73/5,312.90
  6. Step 6: Final answer
    x = 2,422.71

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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.