Home / 7,678.02-11,515.84-2,411.80

Finding the Fourth Proportional to 7,678.02, 11,515.84 and 2,411.80

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Solution

The fourth proportional to 7,678.02, 11,515.84 and 2,411.80 is: 3,617.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.02 : 11,515.84 = 2,411.80 : x
  2. Step 2: Convert to fraction form
    7,678.02/11,515.84 = 2,411.80/x
  3. Step 3: Cross multiply
    7,678.02x = 11,515.84 × 2,411.80
  4. Step 4: Simplify right side
    7,678.02x = 27,773,902.91
  5. Step 5: Solve for x
    x = 27,773,902.91/7,678.02
  6. Step 6: Final answer
    x = 3,617.33

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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.