Home / 1,553.80-2,146.34-1,443.08

Finding the Fourth Proportional to 1,553.80, 2,146.34 and 1,443.08

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Solution

The fourth proportional to 1,553.80, 2,146.34 and 1,443.08 is: 1,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.80 : 2,146.34 = 1,443.08 : x
  2. Step 2: Convert to fraction form
    1,553.80/2,146.34 = 1,443.08/x
  3. Step 3: Cross multiply
    1,553.80x = 2,146.34 × 1,443.08
  4. Step 4: Simplify right side
    1,553.80x = 3,097,330.10
  5. Step 5: Solve for x
    x = 3,097,330.10/1,553.80
  6. Step 6: Final answer
    x = 1,993.40

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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.