Home / 8,811.51-13,220-2,888.45

Finding the Fourth Proportional to 8,811.51, 13,220 and 2,888.45

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Solution

The fourth proportional to 8,811.51, 13,220 and 2,888.45 is: 4,333.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.51 : 13,220 = 2,888.45 : x
  2. Step 2: Convert to fraction form
    8,811.51/13,220 = 2,888.45/x
  3. Step 3: Cross multiply
    8,811.51x = 13,220 × 2,888.45
  4. Step 4: Simplify right side
    8,811.51x = 38,185,242.90
  5. Step 5: Solve for x
    x = 38,185,242.90/8,811.51
  6. Step 6: Final answer
    x = 4,333.57

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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.