Home / 3,117.02-4,291.99-2,918.70

Finding the Fourth Proportional to 3,117.02, 4,291.99 and 2,918.70

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Solution

The fourth proportional to 3,117.02, 4,291.99 and 2,918.70 is: 4,018.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.02 : 4,291.99 = 2,918.70 : x
  2. Step 2: Convert to fraction form
    3,117.02/4,291.99 = 2,918.70/x
  3. Step 3: Cross multiply
    3,117.02x = 4,291.99 × 2,918.70
  4. Step 4: Simplify right side
    3,117.02x = 12,527,023.92
  5. Step 5: Solve for x
    x = 12,527,023.92/3,117.02
  6. Step 6: Final answer
    x = 4,018.92

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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.