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Finding the Fourth Proportional to 10,079.81, 15,120.05 and 3,506.05

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Solution

The fourth proportional to 10,079.81, 15,120.05 and 3,506.05 is: 5,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.81 : 15,120.05 = 3,506.05 : x
  2. Step 2: Convert to fraction form
    10,079.81/15,120.05 = 3,506.05/x
  3. Step 3: Cross multiply
    10,079.81x = 15,120.05 × 3,506.05
  4. Step 4: Simplify right side
    10,079.81x = 53,011,660.07
  5. Step 5: Solve for x
    x = 53,011,660.07/10,079.81
  6. Step 6: Final answer
    x = 5,259.19

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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.