Home / 2,561.40-3,529.02-2,116.92

Finding the Fourth Proportional to 2,561.40, 3,529.02 and 2,116.92

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Solution

The fourth proportional to 2,561.40, 3,529.02 and 2,116.92 is: 2,916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.40 : 3,529.02 = 2,116.92 : x
  2. Step 2: Convert to fraction form
    2,561.40/3,529.02 = 2,116.92/x
  3. Step 3: Cross multiply
    2,561.40x = 3,529.02 × 2,116.92
  4. Step 4: Simplify right side
    2,561.40x = 7,470,653.02
  5. Step 5: Solve for x
    x = 7,470,653.02/2,561.40
  6. Step 6: Final answer
    x = 2,916.63

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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.