Home / 7,859.19-10,845.28-4,321.72

Finding the Fourth Proportional to 7,859.19, 10,845.28 and 4,321.72

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Solution

The fourth proportional to 7,859.19, 10,845.28 and 4,321.72 is: 5,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.19 : 10,845.28 = 4,321.72 : x
  2. Step 2: Convert to fraction form
    7,859.19/10,845.28 = 4,321.72/x
  3. Step 3: Cross multiply
    7,859.19x = 10,845.28 × 4,321.72
  4. Step 4: Simplify right side
    7,859.19x = 46,870,263.48
  5. Step 5: Solve for x
    x = 46,870,263.48/7,859.19
  6. Step 6: Final answer
    x = 5,963.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.