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Finding the Fourth Proportional to 8,804.79, 13,215.87 and 5,985

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Solution

The fourth proportional to 8,804.79, 13,215.87 and 5,985 is: 8,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,804.79 : 13,215.87 = 5,985 : x
  2. Step 2: Convert to fraction form
    8,804.79/13,215.87 = 5,985/x
  3. Step 3: Cross multiply
    8,804.79x = 13,215.87 × 5,985
  4. Step 4: Simplify right side
    8,804.79x = 79,096,981.95
  5. Step 5: Solve for x
    x = 79,096,981.95/8,804.79
  6. Step 6: Final answer
    x = 8,983.40

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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.