Home / 8,939.55-13,395.63-4,780.14

Finding the Fourth Proportional to 8,939.55, 13,395.63 and 4,780.14

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Solution

The fourth proportional to 8,939.55, 13,395.63 and 4,780.14 is: 7,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.55 : 13,395.63 = 4,780.14 : x
  2. Step 2: Convert to fraction form
    8,939.55/13,395.63 = 4,780.14/x
  3. Step 3: Cross multiply
    8,939.55x = 13,395.63 × 4,780.14
  4. Step 4: Simplify right side
    8,939.55x = 64,032,986.79
  5. Step 5: Solve for x
    x = 64,032,986.79/8,939.55
  6. Step 6: Final answer
    x = 7,162.89

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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.