Home / 3,574.21-4,931.23-2,157.36

Finding the Fourth Proportional to 3,574.21, 4,931.23 and 2,157.36

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Solution

The fourth proportional to 3,574.21, 4,931.23 and 2,157.36 is: 2,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.21 : 4,931.23 = 2,157.36 : x
  2. Step 2: Convert to fraction form
    3,574.21/4,931.23 = 2,157.36/x
  3. Step 3: Cross multiply
    3,574.21x = 4,931.23 × 2,157.36
  4. Step 4: Simplify right side
    3,574.21x = 10,638,454.81
  5. Step 5: Solve for x
    x = 10,638,454.81/3,574.21
  6. Step 6: Final answer
    x = 2,976.45

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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.