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Finding the Fourth Proportional to 1,935.30, 2,904.30 and 840.45

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Solution

The fourth proportional to 1,935.30, 2,904.30 and 840.45 is: 1,261.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.30 : 2,904.30 = 840.45 : x
  2. Step 2: Convert to fraction form
    1,935.30/2,904.30 = 840.45/x
  3. Step 3: Cross multiply
    1,935.30x = 2,904.30 × 840.45
  4. Step 4: Simplify right side
    1,935.30x = 2,440,918.94
  5. Step 5: Solve for x
    x = 2,440,918.94/1,935.30
  6. Step 6: Final answer
    x = 1,261.26

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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.