Home / 1,409.04-2,112.12-784.44

Finding the Fourth Proportional to 1,409.04, 2,112.12 and 784.44

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Solution

The fourth proportional to 1,409.04, 2,112.12 and 784.44 is: 1,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.04 : 2,112.12 = 784.44 : x
  2. Step 2: Convert to fraction form
    1,409.04/2,112.12 = 784.44/x
  3. Step 3: Cross multiply
    1,409.04x = 2,112.12 × 784.44
  4. Step 4: Simplify right side
    1,409.04x = 1,656,831.41
  5. Step 5: Solve for x
    x = 1,656,831.41/1,409.04
  6. Step 6: Final answer
    x = 1,175.86

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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.