Home / 1,403.28-1,935.36-1,108.08

Finding the Fourth Proportional to 1,403.28, 1,935.36 and 1,108.08

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Solution

The fourth proportional to 1,403.28, 1,935.36 and 1,108.08 is: 1,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.28 : 1,935.36 = 1,108.08 : x
  2. Step 2: Convert to fraction form
    1,403.28/1,935.36 = 1,108.08/x
  3. Step 3: Cross multiply
    1,403.28x = 1,935.36 × 1,108.08
  4. Step 4: Simplify right side
    1,403.28x = 2,144,533.71
  5. Step 5: Solve for x
    x = 2,144,533.71/1,403.28
  6. Step 6: Final answer
    x = 1,528.23

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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.