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Finding the Fourth Proportional to 3,602.55, 4,971.51 and 2,009.20

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Solution

The fourth proportional to 3,602.55, 4,971.51 and 2,009.20 is: 2,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,602.55 : 4,971.51 = 2,009.20 : x
  2. Step 2: Convert to fraction form
    3,602.55/4,971.51 = 2,009.20/x
  3. Step 3: Cross multiply
    3,602.55x = 4,971.51 × 2,009.20
  4. Step 4: Simplify right side
    3,602.55x = 9,988,741.20
  5. Step 5: Solve for x
    x = 9,988,741.20/3,602.55
  6. Step 6: Final answer
    x = 2,772.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.