Home / 5,320.31-7,981.41-1,810.14

Finding the Fourth Proportional to 5,320.31, 7,981.41 and 1,810.14

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Solution

The fourth proportional to 5,320.31, 7,981.41 and 1,810.14 is: 2,715.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.31 : 7,981.41 = 1,810.14 : x
  2. Step 2: Convert to fraction form
    5,320.31/7,981.41 = 1,810.14/x
  3. Step 3: Cross multiply
    5,320.31x = 7,981.41 × 1,810.14
  4. Step 4: Simplify right side
    5,320.31x = 14,447,429.59
  5. Step 5: Solve for x
    x = 14,447,429.59/5,320.31
  6. Step 6: Final answer
    x = 2,715.53

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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.