Home / 2,120.39-2,926.20-1,411.01

Finding the Fourth Proportional to 2,120.39, 2,926.20 and 1,411.01

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Solution

The fourth proportional to 2,120.39, 2,926.20 and 1,411.01 is: 1,947.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.39 : 2,926.20 = 1,411.01 : x
  2. Step 2: Convert to fraction form
    2,120.39/2,926.20 = 1,411.01/x
  3. Step 3: Cross multiply
    2,120.39x = 2,926.20 × 1,411.01
  4. Step 4: Simplify right side
    2,120.39x = 4,128,897.46
  5. Step 5: Solve for x
    x = 4,128,897.46/2,120.39
  6. Step 6: Final answer
    x = 1,947.23

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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.