Home / 1,913.32-2,640.02-1,205.56

Finding the Fourth Proportional to 1,913.32, 2,640.02 and 1,205.56

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Solution

The fourth proportional to 1,913.32, 2,640.02 and 1,205.56 is: 1,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.32 : 2,640.02 = 1,205.56 : x
  2. Step 2: Convert to fraction form
    1,913.32/2,640.02 = 1,205.56/x
  3. Step 3: Cross multiply
    1,913.32x = 2,640.02 × 1,205.56
  4. Step 4: Simplify right side
    1,913.32x = 3,182,702.51
  5. Step 5: Solve for x
    x = 3,182,702.51/1,913.32
  6. Step 6: Final answer
    x = 1,663.44

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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.