Home / 1,540.22-2,125.44-877.07

Finding the Fourth Proportional to 1,540.22, 2,125.44 and 877.07

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Solution

The fourth proportional to 1,540.22, 2,125.44 and 877.07 is: 1,210.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.22 : 2,125.44 = 877.07 : x
  2. Step 2: Convert to fraction form
    1,540.22/2,125.44 = 877.07/x
  3. Step 3: Cross multiply
    1,540.22x = 2,125.44 × 877.07
  4. Step 4: Simplify right side
    1,540.22x = 1,864,159.66
  5. Step 5: Solve for x
    x = 1,864,159.66/1,540.22
  6. Step 6: Final answer
    x = 1,210.32

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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.