Home / 1,277.17-1,916.24-660.49

Finding the Fourth Proportional to 1,277.17, 1,916.24 and 660.49

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Solution

The fourth proportional to 1,277.17, 1,916.24 and 660.49 is: 990.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.17 : 1,916.24 = 660.49 : x
  2. Step 2: Convert to fraction form
    1,277.17/1,916.24 = 660.49/x
  3. Step 3: Cross multiply
    1,277.17x = 1,916.24 × 660.49
  4. Step 4: Simplify right side
    1,277.17x = 1,265,657.36
  5. Step 5: Solve for x
    x = 1,265,657.36/1,277.17
  6. Step 6: Final answer
    x = 990.99

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1.5x scale

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.