Home / 1,489.81-2,233.63-904.95

Finding the Fourth Proportional to 1,489.81, 2,233.63 and 904.95

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Solution

The fourth proportional to 1,489.81, 2,233.63 and 904.95 is: 1,356.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.81 : 2,233.63 = 904.95 : x
  2. Step 2: Convert to fraction form
    1,489.81/2,233.63 = 904.95/x
  3. Step 3: Cross multiply
    1,489.81x = 2,233.63 × 904.95
  4. Step 4: Simplify right side
    1,489.81x = 2,021,323.47
  5. Step 5: Solve for x
    x = 2,021,323.47/1,489.81
  6. Step 6: Final answer
    x = 1,356.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.