Home / 1,531.14-2,112.60-901.63

Finding the Fourth Proportional to 1,531.14, 2,112.60 and 901.63

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Solution

The fourth proportional to 1,531.14, 2,112.60 and 901.63 is: 1,244.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.14 : 2,112.60 = 901.63 : x
  2. Step 2: Convert to fraction form
    1,531.14/2,112.60 = 901.63/x
  3. Step 3: Cross multiply
    1,531.14x = 2,112.60 × 901.63
  4. Step 4: Simplify right side
    1,531.14x = 1,904,783.54
  5. Step 5: Solve for x
    x = 1,904,783.54/1,531.14
  6. Step 6: Final answer
    x = 1,244.03

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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.