Home / 7,639.64-10,542.74-4,985.48

Finding the Fourth Proportional to 7,639.64, 10,542.74 and 4,985.48

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Solution

The fourth proportional to 7,639.64, 10,542.74 and 4,985.48 is: 6,879.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.64 : 10,542.74 = 4,985.48 : x
  2. Step 2: Convert to fraction form
    7,639.64/10,542.74 = 4,985.48/x
  3. Step 3: Cross multiply
    7,639.64x = 10,542.74 × 4,985.48
  4. Step 4: Simplify right side
    7,639.64x = 52,560,619.42
  5. Step 5: Solve for x
    x = 52,560,619.42/7,639.64
  6. Step 6: Final answer
    x = 6,879.99

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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.