Home / 5,117.19-7,675.76-1,419.40

Finding the Fourth Proportional to 5,117.19, 7,675.76 and 1,419.40

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Solution

The fourth proportional to 5,117.19, 7,675.76 and 1,419.40 is: 2,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.19 : 7,675.76 = 1,419.40 : x
  2. Step 2: Convert to fraction form
    5,117.19/7,675.76 = 1,419.40/x
  3. Step 3: Cross multiply
    5,117.19x = 7,675.76 × 1,419.40
  4. Step 4: Simplify right side
    5,117.19x = 10,894,986.89
  5. Step 5: Solve for x
    x = 10,894,986.89/5,117.19
  6. Step 6: Final answer
    x = 2,129.10

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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.