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Finding the Fourth Proportional to 1,349.30, 1,860.98 and 877.35

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Solution

The fourth proportional to 1,349.30, 1,860.98 and 877.35 is: 1,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.30 : 1,860.98 = 877.35 : x
  2. Step 2: Convert to fraction form
    1,349.30/1,860.98 = 877.35/x
  3. Step 3: Cross multiply
    1,349.30x = 1,860.98 × 877.35
  4. Step 4: Simplify right side
    1,349.30x = 1,632,725.39
  5. Step 5: Solve for x
    x = 1,632,725.39/1,349.30
  6. Step 6: Final answer
    x = 1,210.05

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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.