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Finding the Fourth Proportional to 1,486.80, 2,240.10 and 1,368.72

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Solution

The fourth proportional to 1,486.80, 2,240.10 and 1,368.72 is: 2,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.80 : 2,240.10 = 1,368.72 : x
  2. Step 2: Convert to fraction form
    1,486.80/2,240.10 = 1,368.72/x
  3. Step 3: Cross multiply
    1,486.80x = 2,240.10 × 1,368.72
  4. Step 4: Simplify right side
    1,486.80x = 3,066,069.67
  5. Step 5: Solve for x
    x = 3,066,069.67/1,486.80
  6. Step 6: Final answer
    x = 2,062.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.