Home / 5,715.46-8,572.32-1,555.72

Finding the Fourth Proportional to 5,715.46, 8,572.32 and 1,555.72

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Solution

The fourth proportional to 5,715.46, 8,572.32 and 1,555.72 is: 2,333.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.46 : 8,572.32 = 1,555.72 : x
  2. Step 2: Convert to fraction form
    5,715.46/8,572.32 = 1,555.72/x
  3. Step 3: Cross multiply
    5,715.46x = 8,572.32 × 1,555.72
  4. Step 4: Simplify right side
    5,715.46x = 13,336,129.67
  5. Step 5: Solve for x
    x = 13,336,129.67/5,715.46
  6. Step 6: Final answer
    x = 2,333.34

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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.