Home / 2,355.28-3,254.51-1,690.98

Finding the Fourth Proportional to 2,355.28, 3,254.51 and 1,690.98

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Solution

The fourth proportional to 2,355.28, 3,254.51 and 1,690.98 is: 2,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.28 : 3,254.51 = 1,690.98 : x
  2. Step 2: Convert to fraction form
    2,355.28/3,254.51 = 1,690.98/x
  3. Step 3: Cross multiply
    2,355.28x = 3,254.51 × 1,690.98
  4. Step 4: Simplify right side
    2,355.28x = 5,503,303.34
  5. Step 5: Solve for x
    x = 5,503,303.34/2,355.28
  6. Step 6: Final answer
    x = 2,336.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.