Home / 6,428.40-9,639.20-2,044.72

Finding the Fourth Proportional to 6,428.40, 9,639.20 and 2,044.72

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Solution

The fourth proportional to 6,428.40, 9,639.20 and 2,044.72 is: 3,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.40 : 9,639.20 = 2,044.72 : x
  2. Step 2: Convert to fraction form
    6,428.40/9,639.20 = 2,044.72/x
  3. Step 3: Cross multiply
    6,428.40x = 9,639.20 × 2,044.72
  4. Step 4: Simplify right side
    6,428.40x = 19,709,465.02
  5. Step 5: Solve for x
    x = 19,709,465.02/6,428.40
  6. Step 6: Final answer
    x = 3,066.00

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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.