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Finding the Fourth Proportional to 7,074.79, 9,770.28 and 5,828.20

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Solution

The fourth proportional to 7,074.79, 9,770.28 and 5,828.20 is: 8,048.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.79 : 9,770.28 = 5,828.20 : x
  2. Step 2: Convert to fraction form
    7,074.79/9,770.28 = 5,828.20/x
  3. Step 3: Cross multiply
    7,074.79x = 9,770.28 × 5,828.20
  4. Step 4: Simplify right side
    7,074.79x = 56,943,145.90
  5. Step 5: Solve for x
    x = 56,943,145.90/7,074.79
  6. Step 6: Final answer
    x = 8,048.74

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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.