Home / 3,574.49-4,931.96-2,157.80

Finding the Fourth Proportional to 3,574.49, 4,931.96 and 2,157.80

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Solution

The fourth proportional to 3,574.49, 4,931.96 and 2,157.80 is: 2,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.49 : 4,931.96 = 2,157.80 : x
  2. Step 2: Convert to fraction form
    3,574.49/4,931.96 = 2,157.80/x
  3. Step 3: Cross multiply
    3,574.49x = 4,931.96 × 2,157.80
  4. Step 4: Simplify right side
    3,574.49x = 10,642,147.84
  5. Step 5: Solve for x
    x = 10,642,147.84/3,574.49
  6. Step 6: Final answer
    x = 2,977.25

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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.