Home / 5,436.97-8,155.85-1,688.25

Finding the Fourth Proportional to 5,436.97, 8,155.85 and 1,688.25

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Solution

The fourth proportional to 5,436.97, 8,155.85 and 1,688.25 is: 2,532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.97 : 8,155.85 = 1,688.25 : x
  2. Step 2: Convert to fraction form
    5,436.97/8,155.85 = 1,688.25/x
  3. Step 3: Cross multiply
    5,436.97x = 8,155.85 × 1,688.25
  4. Step 4: Simplify right side
    5,436.97x = 13,769,105.32
  5. Step 5: Solve for x
    x = 13,769,105.32/5,436.97
  6. Step 6: Final answer
    x = 2,532.50

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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.