Home / 2,811.36-4,216.08-1,657.76

Finding the Fourth Proportional to 2,811.36, 4,216.08 and 1,657.76

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Solution

The fourth proportional to 2,811.36, 4,216.08 and 1,657.76 is: 2,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.36 : 4,216.08 = 1,657.76 : x
  2. Step 2: Convert to fraction form
    2,811.36/4,216.08 = 1,657.76/x
  3. Step 3: Cross multiply
    2,811.36x = 4,216.08 × 1,657.76
  4. Step 4: Simplify right side
    2,811.36x = 6,989,248.78
  5. Step 5: Solve for x
    x = 6,989,248.78/2,811.36
  6. Step 6: Final answer
    x = 2,486.07

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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.