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Finding the Fourth Proportional to 3,530.04, 5,295.10 and 1,221

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Solution

The fourth proportional to 3,530.04, 5,295.10 and 1,221 is: 1,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.04 : 5,295.10 = 1,221 : x
  2. Step 2: Convert to fraction form
    3,530.04/5,295.10 = 1,221/x
  3. Step 3: Cross multiply
    3,530.04x = 5,295.10 × 1,221
  4. Step 4: Simplify right side
    3,530.04x = 6,465,317.10
  5. Step 5: Solve for x
    x = 6,465,317.10/3,530.04
  6. Step 6: Final answer
    x = 1,831.51

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Double scale
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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.