Home / 1,307.08-1,949.09-1,125.64

Finding the Fourth Proportional to 1,307.08, 1,949.09 and 1,125.64

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Solution

The fourth proportional to 1,307.08, 1,949.09 and 1,125.64 is: 1,678.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.08 : 1,949.09 = 1,125.64 : x
  2. Step 2: Convert to fraction form
    1,307.08/1,949.09 = 1,125.64/x
  3. Step 3: Cross multiply
    1,307.08x = 1,949.09 × 1,125.64
  4. Step 4: Simplify right side
    1,307.08x = 2,193,973.67
  5. Step 5: Solve for x
    x = 2,193,973.67/1,307.08
  6. Step 6: Final answer
    x = 1,678.53

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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.