Home / 2,918-4,366.06-1,817.21

Finding the Fourth Proportional to 2,918, 4,366.06 and 1,817.21

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Solution

The fourth proportional to 2,918, 4,366.06 and 1,817.21 is: 2,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918 : 4,366.06 = 1,817.21 : x
  2. Step 2: Convert to fraction form
    2,918/4,366.06 = 1,817.21/x
  3. Step 3: Cross multiply
    2,918x = 4,366.06 × 1,817.21
  4. Step 4: Simplify right side
    2,918x = 7,934,047.89
  5. Step 5: Solve for x
    x = 7,934,047.89/2,918
  6. Step 6: Final answer
    x = 2,719.00

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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.