Home / 8,430.40-12,636.22-3,160.36

Finding the Fourth Proportional to 8,430.40, 12,636.22 and 3,160.36

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Solution

The fourth proportional to 8,430.40, 12,636.22 and 3,160.36 is: 4,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.40 : 12,636.22 = 3,160.36 : x
  2. Step 2: Convert to fraction form
    8,430.40/12,636.22 = 3,160.36/x
  3. Step 3: Cross multiply
    8,430.40x = 12,636.22 × 3,160.36
  4. Step 4: Simplify right side
    8,430.40x = 39,935,004.24
  5. Step 5: Solve for x
    x = 39,935,004.24/8,430.40
  6. Step 6: Final answer
    x = 4,737.02

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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.