Home / 1,535.99-2,117.25-1,408.86

Finding the Fourth Proportional to 1,535.99, 2,117.25 and 1,408.86

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Solution

The fourth proportional to 1,535.99, 2,117.25 and 1,408.86 is: 1,942.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.99 : 2,117.25 = 1,408.86 : x
  2. Step 2: Convert to fraction form
    1,535.99/2,117.25 = 1,408.86/x
  3. Step 3: Cross multiply
    1,535.99x = 2,117.25 × 1,408.86
  4. Step 4: Simplify right side
    1,535.99x = 2,982,908.84
  5. Step 5: Solve for x
    x = 2,982,908.84/1,535.99
  6. Step 6: Final answer
    x = 1,942.02

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Double scale
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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.