Home / 5,315.63-7,989.66-5,190.89

Finding the Fourth Proportional to 5,315.63, 7,989.66 and 5,190.89

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Solution

The fourth proportional to 5,315.63, 7,989.66 and 5,190.89 is: 7,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.63 : 7,989.66 = 5,190.89 : x
  2. Step 2: Convert to fraction form
    5,315.63/7,989.66 = 5,190.89/x
  3. Step 3: Cross multiply
    5,315.63x = 7,989.66 × 5,190.89
  4. Step 4: Simplify right side
    5,315.63x = 41,473,446.20
  5. Step 5: Solve for x
    x = 41,473,446.20/5,315.63
  6. Step 6: Final answer
    x = 7,802.17

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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.