Home / 1,919.55-2,864.36-1,712.70

Finding the Fourth Proportional to 1,919.55, 2,864.36 and 1,712.70

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Solution

The fourth proportional to 1,919.55, 2,864.36 and 1,712.70 is: 2,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.55 : 2,864.36 = 1,712.70 : x
  2. Step 2: Convert to fraction form
    1,919.55/2,864.36 = 1,712.70/x
  3. Step 3: Cross multiply
    1,919.55x = 2,864.36 × 1,712.70
  4. Step 4: Simplify right side
    1,919.55x = 4,905,780.81
  5. Step 5: Solve for x
    x = 4,905,780.81/1,919.55
  6. Step 6: Final answer
    x = 2,555.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.