Home / 2,977.05-4,106.51-1,968.76

Finding the Fourth Proportional to 2,977.05, 4,106.51 and 1,968.76

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Solution

The fourth proportional to 2,977.05, 4,106.51 and 1,968.76 is: 2,715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.05 : 4,106.51 = 1,968.76 : x
  2. Step 2: Convert to fraction form
    2,977.05/4,106.51 = 1,968.76/x
  3. Step 3: Cross multiply
    2,977.05x = 4,106.51 × 1,968.76
  4. Step 4: Simplify right side
    2,977.05x = 8,084,712.52
  5. Step 5: Solve for x
    x = 8,084,712.52/2,977.05
  6. Step 6: Final answer
    x = 2,715.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.