Home / 7,719.21-10,642.53-6,301.44

Finding the Fourth Proportional to 7,719.21, 10,642.53 and 6,301.44

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Solution

The fourth proportional to 7,719.21, 10,642.53 and 6,301.44 is: 8,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.21 : 10,642.53 = 6,301.44 : x
  2. Step 2: Convert to fraction form
    7,719.21/10,642.53 = 6,301.44/x
  3. Step 3: Cross multiply
    7,719.21x = 10,642.53 × 6,301.44
  4. Step 4: Simplify right side
    7,719.21x = 67,063,264.24
  5. Step 5: Solve for x
    x = 67,063,264.24/7,719.21
  6. Step 6: Final answer
    x = 8,687.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.