Home / 7,386.87-11,037.05-7,128.48

Finding the Fourth Proportional to 7,386.87, 11,037.05 and 7,128.48

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Solution

The fourth proportional to 7,386.87, 11,037.05 and 7,128.48 is: 10,650.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,386.87 : 11,037.05 = 7,128.48 : x
  2. Step 2: Convert to fraction form
    7,386.87/11,037.05 = 7,128.48/x
  3. Step 3: Cross multiply
    7,386.87x = 11,037.05 × 7,128.48
  4. Step 4: Simplify right side
    7,386.87x = 78,677,422.66
  5. Step 5: Solve for x
    x = 78,677,422.66/7,386.87
  6. Step 6: Final answer
    x = 10,650.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.