Home / 5,218.68-7,826.94-1,931.70

Finding the Fourth Proportional to 5,218.68, 7,826.94 and 1,931.70

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Solution

The fourth proportional to 5,218.68, 7,826.94 and 1,931.70 is: 2,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.68 : 7,826.94 = 1,931.70 : x
  2. Step 2: Convert to fraction form
    5,218.68/7,826.94 = 1,931.70/x
  3. Step 3: Cross multiply
    5,218.68x = 7,826.94 × 1,931.70
  4. Step 4: Simplify right side
    5,218.68x = 15,119,300.00
  5. Step 5: Solve for x
    x = 15,119,300.00/5,218.68
  6. Step 6: Final answer
    x = 2,897.15

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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.