Home / 11,315.40-16,969.04-3,917.87

Finding the Fourth Proportional to 11,315.40, 16,969.04 and 3,917.87

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Solution

The fourth proportional to 11,315.40, 16,969.04 and 3,917.87 is: 5,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.40 : 16,969.04 = 3,917.87 : x
  2. Step 2: Convert to fraction form
    11,315.40/16,969.04 = 3,917.87/x
  3. Step 3: Cross multiply
    11,315.40x = 16,969.04 × 3,917.87
  4. Step 4: Simplify right side
    11,315.40x = 66,482,492.74
  5. Step 5: Solve for x
    x = 66,482,492.74/11,315.40
  6. Step 6: Final answer
    x = 5,875.40

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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.