Home / 5,478.81-8,217.72-1,530.15

Finding the Fourth Proportional to 5,478.81, 8,217.72 and 1,530.15

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Solution

The fourth proportional to 5,478.81, 8,217.72 and 1,530.15 is: 2,295.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.81 : 8,217.72 = 1,530.15 : x
  2. Step 2: Convert to fraction form
    5,478.81/8,217.72 = 1,530.15/x
  3. Step 3: Cross multiply
    5,478.81x = 8,217.72 × 1,530.15
  4. Step 4: Simplify right side
    5,478.81x = 12,574,344.26
  5. Step 5: Solve for x
    x = 12,574,344.26/5,478.81
  6. Step 6: Final answer
    x = 2,295.09

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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.