Home / 2,240.10-3,091.40-1,355.39

Finding the Fourth Proportional to 2,240.10, 3,091.40 and 1,355.39

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Solution

The fourth proportional to 2,240.10, 3,091.40 and 1,355.39 is: 1,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.10 : 3,091.40 = 1,355.39 : x
  2. Step 2: Convert to fraction form
    2,240.10/3,091.40 = 1,355.39/x
  3. Step 3: Cross multiply
    2,240.10x = 3,091.40 × 1,355.39
  4. Step 4: Simplify right side
    2,240.10x = 4,190,030.41
  5. Step 5: Solve for x
    x = 4,190,030.41/2,240.10
  6. Step 6: Final answer
    x = 1,870.47

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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.