Home / 5,439.61-8,154.81-2,155.03

Finding the Fourth Proportional to 5,439.61, 8,154.81 and 2,155.03

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Solution

The fourth proportional to 5,439.61, 8,154.81 and 2,155.03 is: 3,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.61 : 8,154.81 = 2,155.03 : x
  2. Step 2: Convert to fraction form
    5,439.61/8,154.81 = 2,155.03/x
  3. Step 3: Cross multiply
    5,439.61x = 8,154.81 × 2,155.03
  4. Step 4: Simplify right side
    5,439.61x = 17,573,860.19
  5. Step 5: Solve for x
    x = 17,573,860.19/5,439.61
  6. Step 6: Final answer
    x = 3,230.72

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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.