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Finding the Fourth Proportional to 8,417.18, 11,615.18 and 4,640.14

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Solution

The fourth proportional to 8,417.18, 11,615.18 and 4,640.14 is: 6,403.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.18 : 11,615.18 = 4,640.14 : x
  2. Step 2: Convert to fraction form
    8,417.18/11,615.18 = 4,640.14/x
  3. Step 3: Cross multiply
    8,417.18x = 11,615.18 × 4,640.14
  4. Step 4: Simplify right side
    8,417.18x = 53,896,013.41
  5. Step 5: Solve for x
    x = 53,896,013.41/8,417.18
  6. Step 6: Final answer
    x = 6,403.09

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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.