Home / 7,130.30-9,839.72-4,146.26

Finding the Fourth Proportional to 7,130.30, 9,839.72 and 4,146.26

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Solution

The fourth proportional to 7,130.30, 9,839.72 and 4,146.26 is: 5,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.30 : 9,839.72 = 4,146.26 : x
  2. Step 2: Convert to fraction form
    7,130.30/9,839.72 = 4,146.26/x
  3. Step 3: Cross multiply
    7,130.30x = 9,839.72 × 4,146.26
  4. Step 4: Simplify right side
    7,130.30x = 40,798,037.45
  5. Step 5: Solve for x
    x = 40,798,037.45/7,130.30
  6. Step 6: Final answer
    x = 5,721.78

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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.