Home / 2,113.81-2,917.35-1,328.92

Finding the Fourth Proportional to 2,113.81, 2,917.35 and 1,328.92

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Solution

The fourth proportional to 2,113.81, 2,917.35 and 1,328.92 is: 1,834.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.81 : 2,917.35 = 1,328.92 : x
  2. Step 2: Convert to fraction form
    2,113.81/2,917.35 = 1,328.92/x
  3. Step 3: Cross multiply
    2,113.81x = 2,917.35 × 1,328.92
  4. Step 4: Simplify right side
    2,113.81x = 3,876,924.76
  5. Step 5: Solve for x
    x = 3,876,924.76/2,113.81
  6. Step 6: Final answer
    x = 1,834.09

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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.