Home / 5,315.88-7,339.32-3,428.40

Finding the Fourth Proportional to 5,315.88, 7,339.32 and 3,428.40

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Solution

The fourth proportional to 5,315.88, 7,339.32 and 3,428.40 is: 4,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.88 : 7,339.32 = 3,428.40 : x
  2. Step 2: Convert to fraction form
    5,315.88/7,339.32 = 3,428.40/x
  3. Step 3: Cross multiply
    5,315.88x = 7,339.32 × 3,428.40
  4. Step 4: Simplify right side
    5,315.88x = 25,162,124.69
  5. Step 5: Solve for x
    x = 25,162,124.69/5,315.88
  6. Step 6: Final answer
    x = 4,733.39

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1.5x scale

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.