Home / 5,085.76-7,660.12-4,725.28

Finding the Fourth Proportional to 5,085.76, 7,660.12 and 4,725.28

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Solution

The fourth proportional to 5,085.76, 7,660.12 and 4,725.28 is: 7,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.76 : 7,660.12 = 4,725.28 : x
  2. Step 2: Convert to fraction form
    5,085.76/7,660.12 = 4,725.28/x
  3. Step 3: Cross multiply
    5,085.76x = 7,660.12 × 4,725.28
  4. Step 4: Simplify right side
    5,085.76x = 36,196,211.83
  5. Step 5: Solve for x
    x = 36,196,211.83/5,085.76
  6. Step 6: Final answer
    x = 7,117.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.