Home / 7,678.13-11,518.81-3,061.13

Finding the Fourth Proportional to 7,678.13, 11,518.81 and 3,061.13

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Solution

The fourth proportional to 7,678.13, 11,518.81 and 3,061.13 is: 4,592.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.13 : 11,518.81 = 3,061.13 : x
  2. Step 2: Convert to fraction form
    7,678.13/11,518.81 = 3,061.13/x
  3. Step 3: Cross multiply
    7,678.13x = 11,518.81 × 3,061.13
  4. Step 4: Simplify right side
    7,678.13x = 35,260,509.61
  5. Step 5: Solve for x
    x = 35,260,509.61/7,678.13
  6. Step 6: Final answer
    x = 4,592.33

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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.