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Finding the Fourth Proportional to 5,756.88, 7,948.32 and 4,428.24

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Solution

The fourth proportional to 5,756.88, 7,948.32 and 4,428.24 is: 6,113.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,756.88 : 7,948.32 = 4,428.24 : x
  2. Step 2: Convert to fraction form
    5,756.88/7,948.32 = 4,428.24/x
  3. Step 3: Cross multiply
    5,756.88x = 7,948.32 × 4,428.24
  4. Step 4: Simplify right side
    5,756.88x = 35,197,068.56
  5. Step 5: Solve for x
    x = 35,197,068.56/5,756.88
  6. Step 6: Final answer
    x = 6,113.91

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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.