Home / 9,817.80-14,717.10-5,140.20

Finding the Fourth Proportional to 9,817.80, 14,717.10 and 5,140.20

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Solution

The fourth proportional to 9,817.80, 14,717.10 and 5,140.20 is: 7,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,817.80 : 14,717.10 = 5,140.20 : x
  2. Step 2: Convert to fraction form
    9,817.80/14,717.10 = 5,140.20/x
  3. Step 3: Cross multiply
    9,817.80x = 14,717.10 × 5,140.20
  4. Step 4: Simplify right side
    9,817.80x = 75,648,837.42
  5. Step 5: Solve for x
    x = 75,648,837.42/9,817.80
  6. Step 6: Final answer
    x = 7,705.27

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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.