Home / 7,612.10-11,420.45-5,395.21

Finding the Fourth Proportional to 7,612.10, 11,420.45 and 5,395.21

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Solution

The fourth proportional to 7,612.10, 11,420.45 and 5,395.21 is: 8,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.10 : 11,420.45 = 5,395.21 : x
  2. Step 2: Convert to fraction form
    7,612.10/11,420.45 = 5,395.21/x
  3. Step 3: Cross multiply
    7,612.10x = 11,420.45 × 5,395.21
  4. Step 4: Simplify right side
    7,612.10x = 61,615,726.04
  5. Step 5: Solve for x
    x = 61,615,726.04/7,612.10
  6. Step 6: Final answer
    x = 8,094.45

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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.