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Finding the Fourth Proportional to 6,528.79, 9,003.72 and 4,289.86

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Solution

The fourth proportional to 6,528.79, 9,003.72 and 4,289.86 is: 5,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,528.79 : 9,003.72 = 4,289.86 : x
  2. Step 2: Convert to fraction form
    6,528.79/9,003.72 = 4,289.86/x
  3. Step 3: Cross multiply
    6,528.79x = 9,003.72 × 4,289.86
  4. Step 4: Simplify right side
    6,528.79x = 38,624,698.28
  5. Step 5: Solve for x
    x = 38,624,698.28/6,528.79
  6. Step 6: Final answer
    x = 5,916.06

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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.