Home / 7,860.98-11,784.90-5,389.76

Finding the Fourth Proportional to 7,860.98, 11,784.90 and 5,389.76

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Solution

The fourth proportional to 7,860.98, 11,784.90 and 5,389.76 is: 8,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.98 : 11,784.90 = 5,389.76 : x
  2. Step 2: Convert to fraction form
    7,860.98/11,784.90 = 5,389.76/x
  3. Step 3: Cross multiply
    7,860.98x = 11,784.90 × 5,389.76
  4. Step 4: Simplify right side
    7,860.98x = 63,517,782.62
  5. Step 5: Solve for x
    x = 63,517,782.62/7,860.98
  6. Step 6: Final answer
    x = 8,080.14

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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.