Home / 7,428.10-11,120.28-5,488.96

Finding the Fourth Proportional to 7,428.10, 11,120.28 and 5,488.96

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Solution

The fourth proportional to 7,428.10, 11,120.28 and 5,488.96 is: 8,217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.10 : 11,120.28 = 5,488.96 : x
  2. Step 2: Convert to fraction form
    7,428.10/11,120.28 = 5,488.96/x
  3. Step 3: Cross multiply
    7,428.10x = 11,120.28 × 5,488.96
  4. Step 4: Simplify right side
    7,428.10x = 61,038,772.11
  5. Step 5: Solve for x
    x = 61,038,772.11/7,428.10
  6. Step 6: Final answer
    x = 8,217.28

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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.