Home / 3,415.68-5,117.76-3,130.56

Finding the Fourth Proportional to 3,415.68, 5,117.76 and 3,130.56

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Solution

The fourth proportional to 3,415.68, 5,117.76 and 3,130.56 is: 4,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.68 : 5,117.76 = 3,130.56 : x
  2. Step 2: Convert to fraction form
    3,415.68/5,117.76 = 3,130.56/x
  3. Step 3: Cross multiply
    3,415.68x = 5,117.76 × 3,130.56
  4. Step 4: Simplify right side
    3,415.68x = 16,021,454.75
  5. Step 5: Solve for x
    x = 16,021,454.75/3,415.68
  6. Step 6: Final answer
    x = 4,690.56

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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.