Home / 2,087.08-3,126.30-1,531.40

Finding the Fourth Proportional to 2,087.08, 3,126.30 and 1,531.40

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Solution

The fourth proportional to 2,087.08, 3,126.30 and 1,531.40 is: 2,293.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.08 : 3,126.30 = 1,531.40 : x
  2. Step 2: Convert to fraction form
    2,087.08/3,126.30 = 1,531.40/x
  3. Step 3: Cross multiply
    2,087.08x = 3,126.30 × 1,531.40
  4. Step 4: Simplify right side
    2,087.08x = 4,787,615.82
  5. Step 5: Solve for x
    x = 4,787,615.82/2,087.08
  6. Step 6: Final answer
    x = 2,293.93

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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.