Home / 1,913.24-2,639.82-1,085.24

Finding the Fourth Proportional to 1,913.24, 2,639.82 and 1,085.24

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Solution

The fourth proportional to 1,913.24, 2,639.82 and 1,085.24 is: 1,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.24 : 2,639.82 = 1,085.24 : x
  2. Step 2: Convert to fraction form
    1,913.24/2,639.82 = 1,085.24/x
  3. Step 3: Cross multiply
    1,913.24x = 2,639.82 × 1,085.24
  4. Step 4: Simplify right side
    1,913.24x = 2,864,838.26
  5. Step 5: Solve for x
    x = 2,864,838.26/1,913.24
  6. Step 6: Final answer
    x = 1,497.38

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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.