Home / 5,420.02-8,130.57-1,471.34

Finding the Fourth Proportional to 5,420.02, 8,130.57 and 1,471.34

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Solution

The fourth proportional to 5,420.02, 8,130.57 and 1,471.34 is: 2,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.02 : 8,130.57 = 1,471.34 : x
  2. Step 2: Convert to fraction form
    5,420.02/8,130.57 = 1,471.34/x
  3. Step 3: Cross multiply
    5,420.02x = 8,130.57 × 1,471.34
  4. Step 4: Simplify right side
    5,420.02x = 11,962,792.21
  5. Step 5: Solve for x
    x = 11,962,792.21/5,420.02
  6. Step 6: Final answer
    x = 2,207.15

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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.