Home / 7,911.90-10,919.27-4,886.84

Finding the Fourth Proportional to 7,911.90, 10,919.27 and 4,886.84

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Solution

The fourth proportional to 7,911.90, 10,919.27 and 4,886.84 is: 6,744.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.90 : 10,919.27 = 4,886.84 : x
  2. Step 2: Convert to fraction form
    7,911.90/10,919.27 = 4,886.84/x
  3. Step 3: Cross multiply
    7,911.90x = 10,919.27 × 4,886.84
  4. Step 4: Simplify right side
    7,911.90x = 53,360,764.92
  5. Step 5: Solve for x
    x = 53,360,764.92/7,911.90
  6. Step 6: Final answer
    x = 6,744.37

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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.