Home / 1,913.24-2,640.62-1,127.32

Finding the Fourth Proportional to 1,913.24, 2,640.62 and 1,127.32

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Solution

The fourth proportional to 1,913.24, 2,640.62 and 1,127.32 is: 1,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.24 : 2,640.62 = 1,127.32 : x
  2. Step 2: Convert to fraction form
    1,913.24/2,640.62 = 1,127.32/x
  3. Step 3: Cross multiply
    1,913.24x = 2,640.62 × 1,127.32
  4. Step 4: Simplify right side
    1,913.24x = 2,976,823.74
  5. Step 5: Solve for x
    x = 2,976,823.74/1,913.24
  6. Step 6: Final answer
    x = 1,555.91

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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.