Home / 5,284.20-7,269.84-5,138.40

Finding the Fourth Proportional to 5,284.20, 7,269.84 and 5,138.40

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Solution

The fourth proportional to 5,284.20, 7,269.84 and 5,138.40 is: 7,069.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.20 : 7,269.84 = 5,138.40 : x
  2. Step 2: Convert to fraction form
    5,284.20/7,269.84 = 5,138.40/x
  3. Step 3: Cross multiply
    5,284.20x = 7,269.84 × 5,138.40
  4. Step 4: Simplify right side
    5,284.20x = 37,355,345.86
  5. Step 5: Solve for x
    x = 37,355,345.86/5,284.20
  6. Step 6: Final answer
    x = 7,069.25

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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.