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Finding the Fourth Proportional to 1,445.53, 1,994.08 and 886.13

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Solution

The fourth proportional to 1,445.53, 1,994.08 and 886.13 is: 1,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.53 : 1,994.08 = 886.13 : x
  2. Step 2: Convert to fraction form
    1,445.53/1,994.08 = 886.13/x
  3. Step 3: Cross multiply
    1,445.53x = 1,994.08 × 886.13
  4. Step 4: Simplify right side
    1,445.53x = 1,767,014.11
  5. Step 5: Solve for x
    x = 1,767,014.11/1,445.53
  6. Step 6: Final answer
    x = 1,222.40

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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.