Home / 7,820.84-11,731.26-1,977.45

Finding the Fourth Proportional to 7,820.84, 11,731.26 and 1,977.45

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Solution

The fourth proportional to 7,820.84, 11,731.26 and 1,977.45 is: 2,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.84 : 11,731.26 = 1,977.45 : x
  2. Step 2: Convert to fraction form
    7,820.84/11,731.26 = 1,977.45/x
  3. Step 3: Cross multiply
    7,820.84x = 11,731.26 × 1,977.45
  4. Step 4: Simplify right side
    7,820.84x = 23,197,943.51
  5. Step 5: Solve for x
    x = 23,197,943.51/7,820.84
  6. Step 6: Final answer
    x = 2,966.17

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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.