Home / 3,155.40-4,356.32-2,038.01

Finding the Fourth Proportional to 3,155.40, 4,356.32 and 2,038.01

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Solution

The fourth proportional to 3,155.40, 4,356.32 and 2,038.01 is: 2,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.40 : 4,356.32 = 2,038.01 : x
  2. Step 2: Convert to fraction form
    3,155.40/4,356.32 = 2,038.01/x
  3. Step 3: Cross multiply
    3,155.40x = 4,356.32 × 2,038.01
  4. Step 4: Simplify right side
    3,155.40x = 8,878,191.75
  5. Step 5: Solve for x
    x = 8,878,191.75/3,155.40
  6. Step 6: Final answer
    x = 2,813.65

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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.