Home / 2,159.80-3,239.70-2,001.40

Finding the Fourth Proportional to 2,159.80, 3,239.70 and 2,001.40

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Solution

The fourth proportional to 2,159.80, 3,239.70 and 2,001.40 is: 3,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.80 : 3,239.70 = 2,001.40 : x
  2. Step 2: Convert to fraction form
    2,159.80/3,239.70 = 2,001.40/x
  3. Step 3: Cross multiply
    2,159.80x = 3,239.70 × 2,001.40
  4. Step 4: Simplify right side
    2,159.80x = 6,483,935.58
  5. Step 5: Solve for x
    x = 6,483,935.58/2,159.80
  6. Step 6: Final answer
    x = 3,002.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.