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Finding the Fourth Proportional to 7,484.40, 11,210.40 and 6,188.40

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Solution

The fourth proportional to 7,484.40, 11,210.40 and 6,188.40 is: 9,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,484.40 : 11,210.40 = 6,188.40 : x
  2. Step 2: Convert to fraction form
    7,484.40/11,210.40 = 6,188.40/x
  3. Step 3: Cross multiply
    7,484.40x = 11,210.40 × 6,188.40
  4. Step 4: Simplify right side
    7,484.40x = 69,374,439.36
  5. Step 5: Solve for x
    x = 69,374,439.36/7,484.40
  6. Step 6: Final answer
    x = 9,269.21

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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.