Home / 3,130.56-4,695.78-1,281.24

Finding the Fourth Proportional to 3,130.56, 4,695.78 and 1,281.24

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Solution

The fourth proportional to 3,130.56, 4,695.78 and 1,281.24 is: 1,921.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.56 : 4,695.78 = 1,281.24 : x
  2. Step 2: Convert to fraction form
    3,130.56/4,695.78 = 1,281.24/x
  3. Step 3: Cross multiply
    3,130.56x = 4,695.78 × 1,281.24
  4. Step 4: Simplify right side
    3,130.56x = 6,016,421.17
  5. Step 5: Solve for x
    x = 6,016,421.17/3,130.56
  6. Step 6: Final answer
    x = 1,921.84

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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.