Home / 2,355.80-3,531.30-1,381.40

Finding the Fourth Proportional to 2,355.80, 3,531.30 and 1,381.40

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Solution

The fourth proportional to 2,355.80, 3,531.30 and 1,381.40 is: 2,070.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.80 : 3,531.30 = 1,381.40 : x
  2. Step 2: Convert to fraction form
    2,355.80/3,531.30 = 1,381.40/x
  3. Step 3: Cross multiply
    2,355.80x = 3,531.30 × 1,381.40
  4. Step 4: Simplify right side
    2,355.80x = 4,878,137.82
  5. Step 5: Solve for x
    x = 4,878,137.82/2,355.80
  6. Step 6: Final answer
    x = 2,070.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.