Home / 3,156.74-4,350.80-2,315.68

Finding the Fourth Proportional to 3,156.74, 4,350.80 and 2,315.68

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Solution

The fourth proportional to 3,156.74, 4,350.80 and 2,315.68 is: 3,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.74 : 4,350.80 = 2,315.68 : x
  2. Step 2: Convert to fraction form
    3,156.74/4,350.80 = 2,315.68/x
  3. Step 3: Cross multiply
    3,156.74x = 4,350.80 × 2,315.68
  4. Step 4: Simplify right side
    3,156.74x = 10,075,060.54
  5. Step 5: Solve for x
    x = 10,075,060.54/3,156.74
  6. Step 6: Final answer
    x = 3,191.60

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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.