Home / 5,130.54-7,077.83-3,140.30

Finding the Fourth Proportional to 5,130.54, 7,077.83 and 3,140.30

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Solution

The fourth proportional to 5,130.54, 7,077.83 and 3,140.30 is: 4,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.54 : 7,077.83 = 3,140.30 : x
  2. Step 2: Convert to fraction form
    5,130.54/7,077.83 = 3,140.30/x
  3. Step 3: Cross multiply
    5,130.54x = 7,077.83 × 3,140.30
  4. Step 4: Simplify right side
    5,130.54x = 22,226,509.55
  5. Step 5: Solve for x
    x = 22,226,509.55/5,130.54
  6. Step 6: Final answer
    x = 4,332.20

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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.