Home / 2,631.51-3,631.90-1,637.11

Finding the Fourth Proportional to 2,631.51, 3,631.90 and 1,637.11

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Solution

The fourth proportional to 2,631.51, 3,631.90 and 1,637.11 is: 2,259.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.51 : 3,631.90 = 1,637.11 : x
  2. Step 2: Convert to fraction form
    2,631.51/3,631.90 = 1,637.11/x
  3. Step 3: Cross multiply
    2,631.51x = 3,631.90 × 1,637.11
  4. Step 4: Simplify right side
    2,631.51x = 5,945,819.81
  5. Step 5: Solve for x
    x = 5,945,819.81/2,631.51
  6. Step 6: Final answer
    x = 2,259.47

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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.