Home / 2,124.21-2,931.44-1,285.01

Finding the Fourth Proportional to 2,124.21, 2,931.44 and 1,285.01

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Solution

The fourth proportional to 2,124.21, 2,931.44 and 1,285.01 is: 1,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.21 : 2,931.44 = 1,285.01 : x
  2. Step 2: Convert to fraction form
    2,124.21/2,931.44 = 1,285.01/x
  3. Step 3: Cross multiply
    2,124.21x = 2,931.44 × 1,285.01
  4. Step 4: Simplify right side
    2,124.21x = 3,766,908.63
  5. Step 5: Solve for x
    x = 3,766,908.63/2,124.21
  6. Step 6: Final answer
    x = 1,773.32

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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.