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Finding the Fourth Proportional to 7,030.60, 9,690.90 and 5,769.40

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Solution

The fourth proportional to 7,030.60, 9,690.90 and 5,769.40 is: 7,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030.60 : 9,690.90 = 5,769.40 : x
  2. Step 2: Convert to fraction form
    7,030.60/9,690.90 = 5,769.40/x
  3. Step 3: Cross multiply
    7,030.60x = 9,690.90 × 5,769.40
  4. Step 4: Simplify right side
    7,030.60x = 55,910,678.46
  5. Step 5: Solve for x
    x = 55,910,678.46/7,030.60
  6. Step 6: Final answer
    x = 7,952.48

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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.