Home / 1,715.40-2,563.44-1,277.64

Finding the Fourth Proportional to 1,715.40, 2,563.44 and 1,277.64

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Solution

The fourth proportional to 1,715.40, 2,563.44 and 1,277.64 is: 1,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.40 : 2,563.44 = 1,277.64 : x
  2. Step 2: Convert to fraction form
    1,715.40/2,563.44 = 1,277.64/x
  3. Step 3: Cross multiply
    1,715.40x = 2,563.44 × 1,277.64
  4. Step 4: Simplify right side
    1,715.40x = 3,275,153.48
  5. Step 5: Solve for x
    x = 3,275,153.48/1,715.40
  6. Step 6: Final answer
    x = 1,909.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.