Home / 5,420.16-8,130.24-4,642.56

Finding the Fourth Proportional to 5,420.16, 8,130.24 and 4,642.56

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Solution

The fourth proportional to 5,420.16, 8,130.24 and 4,642.56 is: 6,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.16 : 8,130.24 = 4,642.56 : x
  2. Step 2: Convert to fraction form
    5,420.16/8,130.24 = 4,642.56/x
  3. Step 3: Cross multiply
    5,420.16x = 8,130.24 × 4,642.56
  4. Step 4: Simplify right side
    5,420.16x = 37,745,127.01
  5. Step 5: Solve for x
    x = 37,745,127.01/5,420.16
  6. Step 6: Final answer
    x = 6,963.84

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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.