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Finding the Fourth Proportional to 5,339.36, 7,368.73 and 3,929.51

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Solution

The fourth proportional to 5,339.36, 7,368.73 and 3,929.51 is: 5,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.36 : 7,368.73 = 3,929.51 : x
  2. Step 2: Convert to fraction form
    5,339.36/7,368.73 = 3,929.51/x
  3. Step 3: Cross multiply
    5,339.36x = 7,368.73 × 3,929.51
  4. Step 4: Simplify right side
    5,339.36x = 28,955,451.55
  5. Step 5: Solve for x
    x = 28,955,451.55/5,339.36
  6. Step 6: Final answer
    x = 5,423.02

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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.