Home / 3,120.09-4,681.01-929.04

Finding the Fourth Proportional to 3,120.09, 4,681.01 and 929.04

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Solution

The fourth proportional to 3,120.09, 4,681.01 and 929.04 is: 1,393.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.09 : 4,681.01 = 929.04 : x
  2. Step 2: Convert to fraction form
    3,120.09/4,681.01 = 929.04/x
  3. Step 3: Cross multiply
    3,120.09x = 4,681.01 × 929.04
  4. Step 4: Simplify right side
    3,120.09x = 4,348,845.53
  5. Step 5: Solve for x
    x = 4,348,845.53/3,120.09
  6. Step 6: Final answer
    x = 1,393.82

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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.