Home / 5,315.76-7,336.08-3,078.12

Finding the Fourth Proportional to 5,315.76, 7,336.08 and 3,078.12

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Solution

The fourth proportional to 5,315.76, 7,336.08 and 3,078.12 is: 4,248.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.76 : 7,336.08 = 3,078.12 : x
  2. Step 2: Convert to fraction form
    5,315.76/7,336.08 = 3,078.12/x
  3. Step 3: Cross multiply
    5,315.76x = 7,336.08 × 3,078.12
  4. Step 4: Simplify right side
    5,315.76x = 22,581,334.57
  5. Step 5: Solve for x
    x = 22,581,334.57/5,315.76
  6. Step 6: Final answer
    x = 4,248.00

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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.