Home / 3,156.95-4,356.15-1,962.20

Finding the Fourth Proportional to 3,156.95, 4,356.15 and 1,962.20

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Solution

The fourth proportional to 3,156.95, 4,356.15 and 1,962.20 is: 2,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.95 : 4,356.15 = 1,962.20 : x
  2. Step 2: Convert to fraction form
    3,156.95/4,356.15 = 1,962.20/x
  3. Step 3: Cross multiply
    3,156.95x = 4,356.15 × 1,962.20
  4. Step 4: Simplify right side
    3,156.95x = 8,547,637.53
  5. Step 5: Solve for x
    x = 8,547,637.53/3,156.95
  6. Step 6: Final answer
    x = 2,707.56

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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.