Home / 7,389.56-10,140.20-6,721.32

Finding the Fourth Proportional to 7,389.56, 10,140.20 and 6,721.32

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Solution

The fourth proportional to 7,389.56, 10,140.20 and 6,721.32 is: 9,223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.56 : 10,140.20 = 6,721.32 : x
  2. Step 2: Convert to fraction form
    7,389.56/10,140.20 = 6,721.32/x
  3. Step 3: Cross multiply
    7,389.56x = 10,140.20 × 6,721.32
  4. Step 4: Simplify right side
    7,389.56x = 68,155,529.06
  5. Step 5: Solve for x
    x = 68,155,529.06/7,389.56
  6. Step 6: Final answer
    x = 9,223.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.