Home / 8,430.51-12,640.37-3,503.55

Finding the Fourth Proportional to 8,430.51, 12,640.37 and 3,503.55

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Solution

The fourth proportional to 8,430.51, 12,640.37 and 3,503.55 is: 5,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.51 : 12,640.37 = 3,503.55 : x
  2. Step 2: Convert to fraction form
    8,430.51/12,640.37 = 3,503.55/x
  3. Step 3: Cross multiply
    8,430.51x = 12,640.37 × 3,503.55
  4. Step 4: Simplify right side
    8,430.51x = 44,286,150.80
  5. Step 5: Solve for x
    x = 44,286,150.80/8,430.51
  6. Step 6: Final answer
    x = 5,253.08

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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.