Home / 4,015.76-5,543.28-2,688.98

Finding the Fourth Proportional to 4,015.76, 5,543.28 and 2,688.98

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Solution

The fourth proportional to 4,015.76, 5,543.28 and 2,688.98 is: 3,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,015.76 : 5,543.28 = 2,688.98 : x
  2. Step 2: Convert to fraction form
    4,015.76/5,543.28 = 2,688.98/x
  3. Step 3: Cross multiply
    4,015.76x = 5,543.28 × 2,688.98
  4. Step 4: Simplify right side
    4,015.76x = 14,905,769.05
  5. Step 5: Solve for x
    x = 14,905,769.05/4,015.76
  6. Step 6: Final answer
    x = 3,711.82

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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.