Home / 1,540.51-2,126.09-877.50

Finding the Fourth Proportional to 1,540.51, 2,126.09 and 877.50

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Solution

The fourth proportional to 1,540.51, 2,126.09 and 877.50 is: 1,211.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.51 : 2,126.09 = 877.50 : x
  2. Step 2: Convert to fraction form
    1,540.51/2,126.09 = 877.50/x
  3. Step 3: Cross multiply
    1,540.51x = 2,126.09 × 877.50
  4. Step 4: Simplify right side
    1,540.51x = 1,865,643.98
  5. Step 5: Solve for x
    x = 1,865,643.98/1,540.51
  6. Step 6: Final answer
    x = 1,211.06

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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.