Home / 8,430.57-11,621.88-5,904.72

Finding the Fourth Proportional to 8,430.57, 11,621.88 and 5,904.72

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Solution

The fourth proportional to 8,430.57, 11,621.88 and 5,904.72 is: 8,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.57 : 11,621.88 = 5,904.72 : x
  2. Step 2: Convert to fraction form
    8,430.57/11,621.88 = 5,904.72/x
  3. Step 3: Cross multiply
    8,430.57x = 11,621.88 × 5,904.72
  4. Step 4: Simplify right side
    8,430.57x = 68,623,947.27
  5. Step 5: Solve for x
    x = 68,623,947.27/8,430.57
  6. Step 6: Final answer
    x = 8,139.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.