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Finding the Fourth Proportional to 8,707.77, 13,078.46 and 7,461.18

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Solution

The fourth proportional to 8,707.77, 13,078.46 and 7,461.18 is: 11,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.77 : 13,078.46 = 7,461.18 : x
  2. Step 2: Convert to fraction form
    8,707.77/13,078.46 = 7,461.18/x
  3. Step 3: Cross multiply
    8,707.77x = 13,078.46 × 7,461.18
  4. Step 4: Simplify right side
    8,707.77x = 97,580,762.84
  5. Step 5: Solve for x
    x = 97,580,762.84/8,707.77
  6. Step 6: Final answer
    x = 11,206.17

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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.