Home / 5,125.36-7,689.21-1,615.35

Finding the Fourth Proportional to 5,125.36, 7,689.21 and 1,615.35

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Solution

The fourth proportional to 5,125.36, 7,689.21 and 1,615.35 is: 2,423.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.36 : 7,689.21 = 1,615.35 : x
  2. Step 2: Convert to fraction form
    5,125.36/7,689.21 = 1,615.35/x
  3. Step 3: Cross multiply
    5,125.36x = 7,689.21 × 1,615.35
  4. Step 4: Simplify right side
    5,125.36x = 12,420,749.44
  5. Step 5: Solve for x
    x = 12,420,749.44/5,125.36
  6. Step 6: Final answer
    x = 2,423.39

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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.