Home / 5,419.90-8,117.70-4,326.40

Finding the Fourth Proportional to 5,419.90, 8,117.70 and 4,326.40

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Solution

The fourth proportional to 5,419.90, 8,117.70 and 4,326.40 is: 6,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.90 : 8,117.70 = 4,326.40 : x
  2. Step 2: Convert to fraction form
    5,419.90/8,117.70 = 4,326.40/x
  3. Step 3: Cross multiply
    5,419.90x = 8,117.70 × 4,326.40
  4. Step 4: Simplify right side
    5,419.90x = 35,120,417.28
  5. Step 5: Solve for x
    x = 35,120,417.28/5,419.90
  6. Step 6: Final answer
    x = 6,479.90

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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.