Home / 3,175.14-4,378.98-1,915.93

Finding the Fourth Proportional to 3,175.14, 4,378.98 and 1,915.93

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Solution

The fourth proportional to 3,175.14, 4,378.98 and 1,915.93 is: 2,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.14 : 4,378.98 = 1,915.93 : x
  2. Step 2: Convert to fraction form
    3,175.14/4,378.98 = 1,915.93/x
  3. Step 3: Cross multiply
    3,175.14x = 4,378.98 × 1,915.93
  4. Step 4: Simplify right side
    3,175.14x = 8,389,808.20
  5. Step 5: Solve for x
    x = 8,389,808.20/3,175.14
  6. Step 6: Final answer
    x = 2,642.34

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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.