Home / 5,368.48-7,408.20-3,130.72

Finding the Fourth Proportional to 5,368.48, 7,408.20 and 3,130.72

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Solution

The fourth proportional to 5,368.48, 7,408.20 and 3,130.72 is: 4,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.48 : 7,408.20 = 3,130.72 : x
  2. Step 2: Convert to fraction form
    5,368.48/7,408.20 = 3,130.72/x
  3. Step 3: Cross multiply
    5,368.48x = 7,408.20 × 3,130.72
  4. Step 4: Simplify right side
    5,368.48x = 23,192,999.90
  5. Step 5: Solve for x
    x = 23,192,999.90/5,368.48
  6. Step 6: Final answer
    x = 4,320.22

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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.