Home / 3,078.06-4,607.28-1,615.20

Finding the Fourth Proportional to 3,078.06, 4,607.28 and 1,615.20

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Solution

The fourth proportional to 3,078.06, 4,607.28 and 1,615.20 is: 2,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.06 : 4,607.28 = 1,615.20 : x
  2. Step 2: Convert to fraction form
    3,078.06/4,607.28 = 1,615.20/x
  3. Step 3: Cross multiply
    3,078.06x = 4,607.28 × 1,615.20
  4. Step 4: Simplify right side
    3,078.06x = 7,441,678.66
  5. Step 5: Solve for x
    x = 7,441,678.66/3,078.06
  6. Step 6: Final answer
    x = 2,417.65

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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.