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Finding the Fourth Proportional to 8,718.51, 13,064.76 and 7,461.66

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Solution

The fourth proportional to 8,718.51, 13,064.76 and 7,461.66 is: 11,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.51 : 13,064.76 = 7,461.66 : x
  2. Step 2: Convert to fraction form
    8,718.51/13,064.76 = 7,461.66/x
  3. Step 3: Cross multiply
    8,718.51x = 13,064.76 × 7,461.66
  4. Step 4: Simplify right side
    8,718.51x = 97,484,797.10
  5. Step 5: Solve for x
    x = 97,484,797.10/8,718.51
  6. Step 6: Final answer
    x = 11,181.36

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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.