Home / 1,687.28-2,518.84-1,675.64

Finding the Fourth Proportional to 1,687.28, 2,518.84 and 1,675.64

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Solution

The fourth proportional to 1,687.28, 2,518.84 and 1,675.64 is: 2,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.28 : 2,518.84 = 1,675.64 : x
  2. Step 2: Convert to fraction form
    1,687.28/2,518.84 = 1,675.64/x
  3. Step 3: Cross multiply
    1,687.28x = 2,518.84 × 1,675.64
  4. Step 4: Simplify right side
    1,687.28x = 4,220,669.06
  5. Step 5: Solve for x
    x = 4,220,669.06/1,687.28
  6. Step 6: Final answer
    x = 2,501.46

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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.