Home / 1,561.01-2,155.07-1,037.75

Finding the Fourth Proportional to 1,561.01, 2,155.07 and 1,037.75

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Solution

The fourth proportional to 1,561.01, 2,155.07 and 1,037.75 is: 1,432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.01 : 2,155.07 = 1,037.75 : x
  2. Step 2: Convert to fraction form
    1,561.01/2,155.07 = 1,037.75/x
  3. Step 3: Cross multiply
    1,561.01x = 2,155.07 × 1,037.75
  4. Step 4: Simplify right side
    1,561.01x = 2,236,415.71
  5. Step 5: Solve for x
    x = 2,236,415.71/1,561.01
  6. Step 6: Final answer
    x = 1,432.68

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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.