Home / 1,316.47-1,974.83-438.94

Finding the Fourth Proportional to 1,316.47, 1,974.83 and 438.94

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Solution

The fourth proportional to 1,316.47, 1,974.83 and 438.94 is: 658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.47 : 1,974.83 = 438.94 : x
  2. Step 2: Convert to fraction form
    1,316.47/1,974.83 = 438.94/x
  3. Step 3: Cross multiply
    1,316.47x = 1,974.83 × 438.94
  4. Step 4: Simplify right side
    1,316.47x = 866,831.88
  5. Step 5: Solve for x
    x = 866,831.88/1,316.47
  6. Step 6: Final answer
    x = 658.45

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1.5x scale

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.