Home / 1,435.36-1,981.28-1,086.08

Finding the Fourth Proportional to 1,435.36, 1,981.28 and 1,086.08

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Solution

The fourth proportional to 1,435.36, 1,981.28 and 1,086.08 is: 1,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.36 : 1,981.28 = 1,086.08 : x
  2. Step 2: Convert to fraction form
    1,435.36/1,981.28 = 1,086.08/x
  3. Step 3: Cross multiply
    1,435.36x = 1,981.28 × 1,086.08
  4. Step 4: Simplify right side
    1,435.36x = 2,151,828.58
  5. Step 5: Solve for x
    x = 2,151,828.58/1,435.36
  6. Step 6: Final answer
    x = 1,499.16

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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.