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Finding the Fourth Proportional to 8,490.79, 12,741.14 and 3,560.01

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Solution

The fourth proportional to 8,490.79, 12,741.14 and 3,560.01 is: 5,342.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.79 : 12,741.14 = 3,560.01 : x
  2. Step 2: Convert to fraction form
    8,490.79/12,741.14 = 3,560.01/x
  3. Step 3: Cross multiply
    8,490.79x = 12,741.14 × 3,560.01
  4. Step 4: Simplify right side
    8,490.79x = 45,358,585.81
  5. Step 5: Solve for x
    x = 45,358,585.81/8,490.79
  6. Step 6: Final answer
    x = 5,342.09

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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.