Home / 2,931.09-4,392.81-2,235.21

Finding the Fourth Proportional to 2,931.09, 4,392.81 and 2,235.21

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Solution

The fourth proportional to 2,931.09, 4,392.81 and 2,235.21 is: 3,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.09 : 4,392.81 = 2,235.21 : x
  2. Step 2: Convert to fraction form
    2,931.09/4,392.81 = 2,235.21/x
  3. Step 3: Cross multiply
    2,931.09x = 4,392.81 × 2,235.21
  4. Step 4: Simplify right side
    2,931.09x = 9,818,852.84
  5. Step 5: Solve for x
    x = 9,818,852.84/2,931.09
  6. Step 6: Final answer
    x = 3,349.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.