Home / 1,980.79-2,972.21-1,437.46

Finding the Fourth Proportional to 1,980.79, 2,972.21 and 1,437.46

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Solution

The fourth proportional to 1,980.79, 2,972.21 and 1,437.46 is: 2,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.79 : 2,972.21 = 1,437.46 : x
  2. Step 2: Convert to fraction form
    1,980.79/2,972.21 = 1,437.46/x
  3. Step 3: Cross multiply
    1,980.79x = 2,972.21 × 1,437.46
  4. Step 4: Simplify right side
    1,980.79x = 4,272,432.99
  5. Step 5: Solve for x
    x = 4,272,432.99/1,980.79
  6. Step 6: Final answer
    x = 2,156.93

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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.