Home / 1,563.74-2,157.63-934.10

Finding the Fourth Proportional to 1,563.74, 2,157.63 and 934.10

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Solution

The fourth proportional to 1,563.74, 2,157.63 and 934.10 is: 1,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.74 : 2,157.63 = 934.10 : x
  2. Step 2: Convert to fraction form
    1,563.74/2,157.63 = 934.10/x
  3. Step 3: Cross multiply
    1,563.74x = 2,157.63 × 934.10
  4. Step 4: Simplify right side
    1,563.74x = 2,015,442.18
  5. Step 5: Solve for x
    x = 2,015,442.18/1,563.74
  6. Step 6: Final answer
    x = 1,288.86

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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.