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Finding the Fourth Proportional to 1,339.82, 1,848.90 and 750.35

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Solution

The fourth proportional to 1,339.82, 1,848.90 and 750.35 is: 1,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.82 : 1,848.90 = 750.35 : x
  2. Step 2: Convert to fraction form
    1,339.82/1,848.90 = 750.35/x
  3. Step 3: Cross multiply
    1,339.82x = 1,848.90 × 750.35
  4. Step 4: Simplify right side
    1,339.82x = 1,387,312.87
  5. Step 5: Solve for x
    x = 1,387,312.87/1,339.82
  6. Step 6: Final answer
    x = 1,035.45

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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.