Home / 1,331.40-1,836.54-1,036.20

Finding the Fourth Proportional to 1,331.40, 1,836.54 and 1,036.20

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Solution

The fourth proportional to 1,331.40, 1,836.54 and 1,036.20 is: 1,429.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.40 : 1,836.54 = 1,036.20 : x
  2. Step 2: Convert to fraction form
    1,331.40/1,836.54 = 1,036.20/x
  3. Step 3: Cross multiply
    1,331.40x = 1,836.54 × 1,036.20
  4. Step 4: Simplify right side
    1,331.40x = 1,903,022.75
  5. Step 5: Solve for x
    x = 1,903,022.75/1,331.40
  6. Step 6: Final answer
    x = 1,429.34

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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.