Home / 6,428.30-9,642.45-2,046.20

Finding the Fourth Proportional to 6,428.30, 9,642.45 and 2,046.20

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Solution

The fourth proportional to 6,428.30, 9,642.45 and 2,046.20 is: 3,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.30 : 9,642.45 = 2,046.20 : x
  2. Step 2: Convert to fraction form
    6,428.30/9,642.45 = 2,046.20/x
  3. Step 3: Cross multiply
    6,428.30x = 9,642.45 × 2,046.20
  4. Step 4: Simplify right side
    6,428.30x = 19,730,381.19
  5. Step 5: Solve for x
    x = 19,730,381.19/6,428.30
  6. Step 6: Final answer
    x = 3,069.30

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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.