Home / 1,219.76-1,831.32-1,038.32

Finding the Fourth Proportional to 1,219.76, 1,831.32 and 1,038.32

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Solution

The fourth proportional to 1,219.76, 1,831.32 and 1,038.32 is: 1,558.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.76 : 1,831.32 = 1,038.32 : x
  2. Step 2: Convert to fraction form
    1,219.76/1,831.32 = 1,038.32/x
  3. Step 3: Cross multiply
    1,219.76x = 1,831.32 × 1,038.32
  4. Step 4: Simplify right side
    1,219.76x = 1,901,496.18
  5. Step 5: Solve for x
    x = 1,901,496.18/1,219.76
  6. Step 6: Final answer
    x = 1,558.91

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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.