Home / 5,436.96-8,155.40-2,515.28

Finding the Fourth Proportional to 5,436.96, 8,155.40 and 2,515.28

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Solution

The fourth proportional to 5,436.96, 8,155.40 and 2,515.28 is: 3,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.96 : 8,155.40 = 2,515.28 : x
  2. Step 2: Convert to fraction form
    5,436.96/8,155.40 = 2,515.28/x
  3. Step 3: Cross multiply
    5,436.96x = 8,155.40 × 2,515.28
  4. Step 4: Simplify right side
    5,436.96x = 20,513,114.51
  5. Step 5: Solve for x
    x = 20,513,114.51/5,436.96
  6. Step 6: Final answer
    x = 3,772.90

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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.