Home / 7,111.80-10,667.70-6,346.35

Finding the Fourth Proportional to 7,111.80, 10,667.70 and 6,346.35

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Solution

The fourth proportional to 7,111.80, 10,667.70 and 6,346.35 is: 9,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.80 : 10,667.70 = 6,346.35 : x
  2. Step 2: Convert to fraction form
    7,111.80/10,667.70 = 6,346.35/x
  3. Step 3: Cross multiply
    7,111.80x = 10,667.70 × 6,346.35
  4. Step 4: Simplify right side
    7,111.80x = 67,700,957.90
  5. Step 5: Solve for x
    x = 67,700,957.90/7,111.80
  6. Step 6: Final answer
    x = 9,519.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.