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Finding the Fourth Proportional to 3,637.80, 5,019.30 and 2,066.40

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Solution

The fourth proportional to 3,637.80, 5,019.30 and 2,066.40 is: 2,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.80 : 5,019.30 = 2,066.40 : x
  2. Step 2: Convert to fraction form
    3,637.80/5,019.30 = 2,066.40/x
  3. Step 3: Cross multiply
    3,637.80x = 5,019.30 × 2,066.40
  4. Step 4: Simplify right side
    3,637.80x = 10,371,881.52
  5. Step 5: Solve for x
    x = 10,371,881.52/3,637.80
  6. Step 6: Final answer
    x = 2,851.14

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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.