Home / 1,887.36-2,605.20-1,102.08

Finding the Fourth Proportional to 1,887.36, 2,605.20 and 1,102.08

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Solution

The fourth proportional to 1,887.36, 2,605.20 and 1,102.08 is: 1,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.36 : 2,605.20 = 1,102.08 : x
  2. Step 2: Convert to fraction form
    1,887.36/2,605.20 = 1,102.08/x
  3. Step 3: Cross multiply
    1,887.36x = 2,605.20 × 1,102.08
  4. Step 4: Simplify right side
    1,887.36x = 2,871,138.82
  5. Step 5: Solve for x
    x = 2,871,138.82/1,887.36
  6. Step 6: Final answer
    x = 1,521.25

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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.