Home / 7,649.21-10,555.49-4,291.72

Finding the Fourth Proportional to 7,649.21, 10,555.49 and 4,291.72

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Solution

The fourth proportional to 7,649.21, 10,555.49 and 4,291.72 is: 5,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,649.21 : 10,555.49 = 4,291.72 : x
  2. Step 2: Convert to fraction form
    7,649.21/10,555.49 = 4,291.72/x
  3. Step 3: Cross multiply
    7,649.21x = 10,555.49 × 4,291.72
  4. Step 4: Simplify right side
    7,649.21x = 45,301,133.31
  5. Step 5: Solve for x
    x = 45,301,133.31/7,649.21
  6. Step 6: Final answer
    x = 5,922.33

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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.