Home / 7,812.37-11,720.31-2,547.64

Finding the Fourth Proportional to 7,812.37, 11,720.31 and 2,547.64

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Solution

The fourth proportional to 7,812.37, 11,720.31 and 2,547.64 is: 3,822.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.37 : 11,720.31 = 2,547.64 : x
  2. Step 2: Convert to fraction form
    7,812.37/11,720.31 = 2,547.64/x
  3. Step 3: Cross multiply
    7,812.37x = 11,720.31 × 2,547.64
  4. Step 4: Simplify right side
    7,812.37x = 29,859,130.57
  5. Step 5: Solve for x
    x = 29,859,130.57/7,812.37
  6. Step 6: Final answer
    x = 3,822.03

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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.