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Finding the Fourth Proportional to 7,079.40, 9,774.18 and 6,157.80

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Solution

The fourth proportional to 7,079.40, 9,774.18 and 6,157.80 is: 8,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.40 : 9,774.18 = 6,157.80 : x
  2. Step 2: Convert to fraction form
    7,079.40/9,774.18 = 6,157.80/x
  3. Step 3: Cross multiply
    7,079.40x = 9,774.18 × 6,157.80
  4. Step 4: Simplify right side
    7,079.40x = 60,187,445.60
  5. Step 5: Solve for x
    x = 60,187,445.60/7,079.40
  6. Step 6: Final answer
    x = 8,501.77

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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.