Home / 5,438.10-8,135.55-4,715.70

Finding the Fourth Proportional to 5,438.10, 8,135.55 and 4,715.70

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Solution

The fourth proportional to 5,438.10, 8,135.55 and 4,715.70 is: 7,054.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.10 : 8,135.55 = 4,715.70 : x
  2. Step 2: Convert to fraction form
    5,438.10/8,135.55 = 4,715.70/x
  3. Step 3: Cross multiply
    5,438.10x = 8,135.55 × 4,715.70
  4. Step 4: Simplify right side
    5,438.10x = 38,364,813.14
  5. Step 5: Solve for x
    x = 38,364,813.14/5,438.10
  6. Step 6: Final answer
    x = 7,054.82

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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.