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Finding the Fourth Proportional to 2,217.48, 3,325.21 and 656.93

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Solution

The fourth proportional to 2,217.48, 3,325.21 and 656.93 is: 985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.48 : 3,325.21 = 656.93 : x
  2. Step 2: Convert to fraction form
    2,217.48/3,325.21 = 656.93/x
  3. Step 3: Cross multiply
    2,217.48x = 3,325.21 × 656.93
  4. Step 4: Simplify right side
    2,217.48x = 2,184,430.21
  5. Step 5: Solve for x
    x = 2,184,430.21/2,217.48
  6. Step 6: Final answer
    x = 985.10

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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.