Home / 2,900.84-4,003.20-1,574.60

Finding the Fourth Proportional to 2,900.84, 4,003.20 and 1,574.60

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Solution

The fourth proportional to 2,900.84, 4,003.20 and 1,574.60 is: 2,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.84 : 4,003.20 = 1,574.60 : x
  2. Step 2: Convert to fraction form
    2,900.84/4,003.20 = 1,574.60/x
  3. Step 3: Cross multiply
    2,900.84x = 4,003.20 × 1,574.60
  4. Step 4: Simplify right side
    2,900.84x = 6,303,438.72
  5. Step 5: Solve for x
    x = 6,303,438.72/2,900.84
  6. Step 6: Final answer
    x = 2,172.97

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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.