Home / 1,440.61-2,160.61-619.27

Finding the Fourth Proportional to 1,440.61, 2,160.61 and 619.27

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Solution

The fourth proportional to 1,440.61, 2,160.61 and 619.27 is: 928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.61 : 2,160.61 = 619.27 : x
  2. Step 2: Convert to fraction form
    1,440.61/2,160.61 = 619.27/x
  3. Step 3: Cross multiply
    1,440.61x = 2,160.61 × 619.27
  4. Step 4: Simplify right side
    1,440.61x = 1,337,994.01
  5. Step 5: Solve for x
    x = 1,337,994.01/1,440.61
  6. Step 6: Final answer
    x = 928.77

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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.