Home / 3,120.58-4,307.10-2,126.25

Finding the Fourth Proportional to 3,120.58, 4,307.10 and 2,126.25

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Solution

The fourth proportional to 3,120.58, 4,307.10 and 2,126.25 is: 2,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.58 : 4,307.10 = 2,126.25 : x
  2. Step 2: Convert to fraction form
    3,120.58/4,307.10 = 2,126.25/x
  3. Step 3: Cross multiply
    3,120.58x = 4,307.10 × 2,126.25
  4. Step 4: Simplify right side
    3,120.58x = 9,157,963.40
  5. Step 5: Solve for x
    x = 9,157,963.40/3,120.58
  6. Step 6: Final answer
    x = 2,934.70

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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.