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Finding the Fourth Proportional to 8,953.72, 13,430.85 and 4,274.22

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Solution

The fourth proportional to 8,953.72, 13,430.85 and 4,274.22 is: 6,411.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.72 : 13,430.85 = 4,274.22 : x
  2. Step 2: Convert to fraction form
    8,953.72/13,430.85 = 4,274.22/x
  3. Step 3: Cross multiply
    8,953.72x = 13,430.85 × 4,274.22
  4. Step 4: Simplify right side
    8,953.72x = 57,406,407.69
  5. Step 5: Solve for x
    x = 57,406,407.69/8,953.72
  6. Step 6: Final answer
    x = 6,411.46

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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.