Home / 8,419.80-11,619.27-4,642.98

Finding the Fourth Proportional to 8,419.80, 11,619.27 and 4,642.98

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Solution

The fourth proportional to 8,419.80, 11,619.27 and 4,642.98 is: 6,407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.80 : 11,619.27 = 4,642.98 : x
  2. Step 2: Convert to fraction form
    8,419.80/11,619.27 = 4,642.98/x
  3. Step 3: Cross multiply
    8,419.80x = 11,619.27 × 4,642.98
  4. Step 4: Simplify right side
    8,419.80x = 53,948,038.22
  5. Step 5: Solve for x
    x = 53,948,038.22/8,419.80
  6. Step 6: Final answer
    x = 6,407.28

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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.