Home / 5,131.84-7,699.28-2,170.57

Finding the Fourth Proportional to 5,131.84, 7,699.28 and 2,170.57

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Solution

The fourth proportional to 5,131.84, 7,699.28 and 2,170.57 is: 3,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.84 : 7,699.28 = 2,170.57 : x
  2. Step 2: Convert to fraction form
    5,131.84/7,699.28 = 2,170.57/x
  3. Step 3: Cross multiply
    5,131.84x = 7,699.28 × 2,170.57
  4. Step 4: Simplify right side
    5,131.84x = 16,711,826.19
  5. Step 5: Solve for x
    x = 16,711,826.19/5,131.84
  6. Step 6: Final answer
    x = 3,256.50

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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.