Home / 8,688.84-13,030.50-3,141.45

Finding the Fourth Proportional to 8,688.84, 13,030.50 and 3,141.45

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Solution

The fourth proportional to 8,688.84, 13,030.50 and 3,141.45 is: 4,711.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.84 : 13,030.50 = 3,141.45 : x
  2. Step 2: Convert to fraction form
    8,688.84/13,030.50 = 3,141.45/x
  3. Step 3: Cross multiply
    8,688.84x = 13,030.50 × 3,141.45
  4. Step 4: Simplify right side
    8,688.84x = 40,934,599.07
  5. Step 5: Solve for x
    x = 40,934,599.07/8,688.84
  6. Step 6: Final answer
    x = 4,711.17

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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.