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Finding the Fourth Proportional to 5,718.80, 7,885.05 and 4,443.05

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Solution

The fourth proportional to 5,718.80, 7,885.05 and 4,443.05 is: 6,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.80 : 7,885.05 = 4,443.05 : x
  2. Step 2: Convert to fraction form
    5,718.80/7,885.05 = 4,443.05/x
  3. Step 3: Cross multiply
    5,718.80x = 7,885.05 × 4,443.05
  4. Step 4: Simplify right side
    5,718.80x = 35,033,674.45
  5. Step 5: Solve for x
    x = 35,033,674.45/5,718.80
  6. Step 6: Final answer
    x = 6,126.05

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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.