Home / 7,431.40-11,151.78-4,317.58

Finding the Fourth Proportional to 7,431.40, 11,151.78 and 4,317.58

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Solution

The fourth proportional to 7,431.40, 11,151.78 and 4,317.58 is: 6,479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.40 : 11,151.78 = 4,317.58 : x
  2. Step 2: Convert to fraction form
    7,431.40/11,151.78 = 4,317.58/x
  3. Step 3: Cross multiply
    7,431.40x = 11,151.78 × 4,317.58
  4. Step 4: Simplify right side
    7,431.40x = 48,148,702.29
  5. Step 5: Solve for x
    x = 48,148,702.29/7,431.40
  6. Step 6: Final answer
    x = 6,479.09

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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.