Home / 3,122.02-4,681.69-930.16

Finding the Fourth Proportional to 3,122.02, 4,681.69 and 930.16

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Solution

The fourth proportional to 3,122.02, 4,681.69 and 930.16 is: 1,394.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.02 : 4,681.69 = 930.16 : x
  2. Step 2: Convert to fraction form
    3,122.02/4,681.69 = 930.16/x
  3. Step 3: Cross multiply
    3,122.02x = 4,681.69 × 930.16
  4. Step 4: Simplify right side
    3,122.02x = 4,354,720.77
  5. Step 5: Solve for x
    x = 4,354,720.77/3,122.02
  6. Step 6: Final answer
    x = 1,394.84

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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.