Home / 1,621.71-2,421.93-1,604.70

Finding the Fourth Proportional to 1,621.71, 2,421.93 and 1,604.70

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Solution

The fourth proportional to 1,621.71, 2,421.93 and 1,604.70 is: 2,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.71 : 2,421.93 = 1,604.70 : x
  2. Step 2: Convert to fraction form
    1,621.71/2,421.93 = 1,604.70/x
  3. Step 3: Cross multiply
    1,621.71x = 2,421.93 × 1,604.70
  4. Step 4: Simplify right side
    1,621.71x = 3,886,471.07
  5. Step 5: Solve for x
    x = 3,886,471.07/1,621.71
  6. Step 6: Final answer
    x = 2,396.53

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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.