Home / 5,251.59-7,875.66-1,919.07

Finding the Fourth Proportional to 5,251.59, 7,875.66 and 1,919.07

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Solution

The fourth proportional to 5,251.59, 7,875.66 and 1,919.07 is: 2,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.59 : 7,875.66 = 1,919.07 : x
  2. Step 2: Convert to fraction form
    5,251.59/7,875.66 = 1,919.07/x
  3. Step 3: Cross multiply
    5,251.59x = 7,875.66 × 1,919.07
  4. Step 4: Simplify right side
    5,251.59x = 15,113,903.46
  5. Step 5: Solve for x
    x = 15,113,903.46/5,251.59
  6. Step 6: Final answer
    x = 2,877.97

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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.