Home / 1,535.78-2,118.20-1,037.63

Finding the Fourth Proportional to 1,535.78, 2,118.20 and 1,037.63

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Solution

The fourth proportional to 1,535.78, 2,118.20 and 1,037.63 is: 1,431.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.78 : 2,118.20 = 1,037.63 : x
  2. Step 2: Convert to fraction form
    1,535.78/2,118.20 = 1,037.63/x
  3. Step 3: Cross multiply
    1,535.78x = 2,118.20 × 1,037.63
  4. Step 4: Simplify right side
    1,535.78x = 2,197,892.09
  5. Step 5: Solve for x
    x = 2,197,892.09/1,535.78
  6. Step 6: Final answer
    x = 1,431.13

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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.