Home / 2,176.16-3,263.84-715.12

Finding the Fourth Proportional to 2,176.16, 3,263.84 and 715.12

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Solution

The fourth proportional to 2,176.16, 3,263.84 and 715.12 is: 1,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.16 : 3,263.84 = 715.12 : x
  2. Step 2: Convert to fraction form
    2,176.16/3,263.84 = 715.12/x
  3. Step 3: Cross multiply
    2,176.16x = 3,263.84 × 715.12
  4. Step 4: Simplify right side
    2,176.16x = 2,334,037.26
  5. Step 5: Solve for x
    x = 2,334,037.26/2,176.16
  6. Step 6: Final answer
    x = 1,072.55

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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.