Home / 1,533.80-2,115.42-1,010.36

Finding the Fourth Proportional to 1,533.80, 2,115.42 and 1,010.36

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Solution

The fourth proportional to 1,533.80, 2,115.42 and 1,010.36 is: 1,393.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.80 : 2,115.42 = 1,010.36 : x
  2. Step 2: Convert to fraction form
    1,533.80/2,115.42 = 1,010.36/x
  3. Step 3: Cross multiply
    1,533.80x = 2,115.42 × 1,010.36
  4. Step 4: Simplify right side
    1,533.80x = 2,137,335.75
  5. Step 5: Solve for x
    x = 2,137,335.75/1,533.80
  6. Step 6: Final answer
    x = 1,393.49

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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.