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Finding the Fourth Proportional to 7,406.70, 11,110.05 and 6,240.30

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Solution

The fourth proportional to 7,406.70, 11,110.05 and 6,240.30 is: 9,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,406.70 : 11,110.05 = 6,240.30 : x
  2. Step 2: Convert to fraction form
    7,406.70/11,110.05 = 6,240.30/x
  3. Step 3: Cross multiply
    7,406.70x = 11,110.05 × 6,240.30
  4. Step 4: Simplify right side
    7,406.70x = 69,330,045.02
  5. Step 5: Solve for x
    x = 69,330,045.02/7,406.70
  6. Step 6: Final answer
    x = 9,360.45

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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.