Home / 7,620.16-11,434.40-5,307.20

Finding the Fourth Proportional to 7,620.16, 11,434.40 and 5,307.20

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Solution

The fourth proportional to 7,620.16, 11,434.40 and 5,307.20 is: 7,963.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.16 : 11,434.40 = 5,307.20 : x
  2. Step 2: Convert to fraction form
    7,620.16/11,434.40 = 5,307.20/x
  3. Step 3: Cross multiply
    7,620.16x = 11,434.40 × 5,307.20
  4. Step 4: Simplify right side
    7,620.16x = 60,684,647.68
  5. Step 5: Solve for x
    x = 60,684,647.68/7,620.16
  6. Step 6: Final answer
    x = 7,963.70

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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.