Home / 4,687.47-7,029.48-1,399.45

Finding the Fourth Proportional to 4,687.47, 7,029.48 and 1,399.45

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Solution

The fourth proportional to 4,687.47, 7,029.48 and 1,399.45 is: 2,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.47 : 7,029.48 = 1,399.45 : x
  2. Step 2: Convert to fraction form
    4,687.47/7,029.48 = 1,399.45/x
  3. Step 3: Cross multiply
    4,687.47x = 7,029.48 × 1,399.45
  4. Step 4: Simplify right side
    4,687.47x = 9,837,405.79
  5. Step 5: Solve for x
    x = 9,837,405.79/4,687.47
  6. Step 6: Final answer
    x = 2,098.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.