Home / 7,880.09-10,875.87-5,520.56

Finding the Fourth Proportional to 7,880.09, 10,875.87 and 5,520.56

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Solution

The fourth proportional to 7,880.09, 10,875.87 and 5,520.56 is: 7,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.09 : 10,875.87 = 5,520.56 : x
  2. Step 2: Convert to fraction form
    7,880.09/10,875.87 = 5,520.56/x
  3. Step 3: Cross multiply
    7,880.09x = 10,875.87 × 5,520.56
  4. Step 4: Simplify right side
    7,880.09x = 60,040,838.51
  5. Step 5: Solve for x
    x = 60,040,838.51/7,880.09
  6. Step 6: Final answer
    x = 7,619.31

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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.