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Finding the Fourth Proportional to 1,585.93, 2,378.90 and 940.77

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Solution

The fourth proportional to 1,585.93, 2,378.90 and 940.77 is: 1,411.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.93 : 2,378.90 = 940.77 : x
  2. Step 2: Convert to fraction form
    1,585.93/2,378.90 = 940.77/x
  3. Step 3: Cross multiply
    1,585.93x = 2,378.90 × 940.77
  4. Step 4: Simplify right side
    1,585.93x = 2,237,997.75
  5. Step 5: Solve for x
    x = 2,237,997.75/1,585.93
  6. Step 6: Final answer
    x = 1,411.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.