Home / 7,911.38-10,916.75-4,374.11

Finding the Fourth Proportional to 7,911.38, 10,916.75 and 4,374.11

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Solution

The fourth proportional to 7,911.38, 10,916.75 and 4,374.11 is: 6,035.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.38 : 10,916.75 = 4,374.11 : x
  2. Step 2: Convert to fraction form
    7,911.38/10,916.75 = 4,374.11/x
  3. Step 3: Cross multiply
    7,911.38x = 10,916.75 × 4,374.11
  4. Step 4: Simplify right side
    7,911.38x = 47,751,065.34
  5. Step 5: Solve for x
    x = 47,751,065.34/7,911.38
  6. Step 6: Final answer
    x = 6,035.74

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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.