Home / 3,118.78-4,303.93-1,792.40

Finding the Fourth Proportional to 3,118.78, 4,303.93 and 1,792.40

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Solution

The fourth proportional to 3,118.78, 4,303.93 and 1,792.40 is: 2,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.78 : 4,303.93 = 1,792.40 : x
  2. Step 2: Convert to fraction form
    3,118.78/4,303.93 = 1,792.40/x
  3. Step 3: Cross multiply
    3,118.78x = 4,303.93 × 1,792.40
  4. Step 4: Simplify right side
    3,118.78x = 7,714,354.27
  5. Step 5: Solve for x
    x = 7,714,354.27/3,118.78
  6. Step 6: Final answer
    x = 2,473.52

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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.