Home / 1,711.86-2,569.02-1,280.16

Finding the Fourth Proportional to 1,711.86, 2,569.02 and 1,280.16

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Solution

The fourth proportional to 1,711.86, 2,569.02 and 1,280.16 is: 1,921.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.86 : 2,569.02 = 1,280.16 : x
  2. Step 2: Convert to fraction form
    1,711.86/2,569.02 = 1,280.16/x
  3. Step 3: Cross multiply
    1,711.86x = 2,569.02 × 1,280.16
  4. Step 4: Simplify right side
    1,711.86x = 3,288,756.64
  5. Step 5: Solve for x
    x = 3,288,756.64/1,711.86
  6. Step 6: Final answer
    x = 1,921.16

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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.