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Finding the Fourth Proportional to 7,905.56, 11,870.68 and 7,555.02

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Solution

The fourth proportional to 7,905.56, 11,870.68 and 7,555.02 is: 11,344.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.56 : 11,870.68 = 7,555.02 : x
  2. Step 2: Convert to fraction form
    7,905.56/11,870.68 = 7,555.02/x
  3. Step 3: Cross multiply
    7,905.56x = 11,870.68 × 7,555.02
  4. Step 4: Simplify right side
    7,905.56x = 89,683,224.81
  5. Step 5: Solve for x
    x = 89,683,224.81/7,905.56
  6. Step 6: Final answer
    x = 11,344.32

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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.