Home / 6,612.16-9,920.40-5,156.32

Finding the Fourth Proportional to 6,612.16, 9,920.40 and 5,156.32

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Solution

The fourth proportional to 6,612.16, 9,920.40 and 5,156.32 is: 7,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.16 : 9,920.40 = 5,156.32 : x
  2. Step 2: Convert to fraction form
    6,612.16/9,920.40 = 5,156.32/x
  3. Step 3: Cross multiply
    6,612.16x = 9,920.40 × 5,156.32
  4. Step 4: Simplify right side
    6,612.16x = 51,152,756.93
  5. Step 5: Solve for x
    x = 51,152,756.93/6,612.16
  6. Step 6: Final answer
    x = 7,736.16

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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.