Home / 1,551.12-2,137.52-1,235.36

Finding the Fourth Proportional to 1,551.12, 2,137.52 and 1,235.36

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Solution

The fourth proportional to 1,551.12, 2,137.52 and 1,235.36 is: 1,702.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.12 : 2,137.52 = 1,235.36 : x
  2. Step 2: Convert to fraction form
    1,551.12/2,137.52 = 1,235.36/x
  3. Step 3: Cross multiply
    1,551.12x = 2,137.52 × 1,235.36
  4. Step 4: Simplify right side
    1,551.12x = 2,640,606.71
  5. Step 5: Solve for x
    x = 2,640,606.71/1,551.12
  6. Step 6: Final answer
    x = 1,702.39

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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.