Home / 7,911.15-10,916.85-4,374.09

Finding the Fourth Proportional to 7,911.15, 10,916.85 and 4,374.09

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Solution

The fourth proportional to 7,911.15, 10,916.85 and 4,374.09 is: 6,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.15 : 10,916.85 = 4,374.09 : x
  2. Step 2: Convert to fraction form
    7,911.15/10,916.85 = 4,374.09/x
  3. Step 3: Cross multiply
    7,911.15x = 10,916.85 × 4,374.09
  4. Step 4: Simplify right side
    7,911.15x = 47,751,284.42
  5. Step 5: Solve for x
    x = 47,751,284.42/7,911.15
  6. Step 6: Final answer
    x = 6,035.95

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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.