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Finding the Fourth Proportional to 1,840.79, 2,540.16 and 1,054.69

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Solution

The fourth proportional to 1,840.79, 2,540.16 and 1,054.69 is: 1,455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.79 : 2,540.16 = 1,054.69 : x
  2. Step 2: Convert to fraction form
    1,840.79/2,540.16 = 1,054.69/x
  3. Step 3: Cross multiply
    1,840.79x = 2,540.16 × 1,054.69
  4. Step 4: Simplify right side
    1,840.79x = 2,679,075
  5. Step 5: Solve for x
    x = 2,679,075/1,840.79
  6. Step 6: Final answer
    x = 1,455.39

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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.