Home / 1,148.84-1,712.62-1,131.08

Finding the Fourth Proportional to 1,148.84, 1,712.62 and 1,131.08

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Solution

The fourth proportional to 1,148.84, 1,712.62 and 1,131.08 is: 1,686.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.84 : 1,712.62 = 1,131.08 : x
  2. Step 2: Convert to fraction form
    1,148.84/1,712.62 = 1,131.08/x
  3. Step 3: Cross multiply
    1,148.84x = 1,712.62 × 1,131.08
  4. Step 4: Simplify right side
    1,148.84x = 1,937,110.23
  5. Step 5: Solve for x
    x = 1,937,110.23/1,148.84
  6. Step 6: Final answer
    x = 1,686.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.