Home / 1,919.84-2,649.44-1,134.40

Finding the Fourth Proportional to 1,919.84, 2,649.44 and 1,134.40

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Solution

The fourth proportional to 1,919.84, 2,649.44 and 1,134.40 is: 1,565.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.84 : 2,649.44 = 1,134.40 : x
  2. Step 2: Convert to fraction form
    1,919.84/2,649.44 = 1,134.40/x
  3. Step 3: Cross multiply
    1,919.84x = 2,649.44 × 1,134.40
  4. Step 4: Simplify right side
    1,919.84x = 3,005,524.74
  5. Step 5: Solve for x
    x = 3,005,524.74/1,919.84
  6. Step 6: Final answer
    x = 1,565.51

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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.