Home / 1,629.40-2,431.55-1,341.40

Finding the Fourth Proportional to 1,629.40, 2,431.55 and 1,341.40

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Solution

The fourth proportional to 1,629.40, 2,431.55 and 1,341.40 is: 2,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.40 : 2,431.55 = 1,341.40 : x
  2. Step 2: Convert to fraction form
    1,629.40/2,431.55 = 1,341.40/x
  3. Step 3: Cross multiply
    1,629.40x = 2,431.55 × 1,341.40
  4. Step 4: Simplify right side
    1,629.40x = 3,261,681.17
  5. Step 5: Solve for x
    x = 3,261,681.17/1,629.40
  6. Step 6: Final answer
    x = 2,001.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.