Home / 1,045.16-1,561.45-976.84

Finding the Fourth Proportional to 1,045.16, 1,561.45 and 976.84

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Solution

The fourth proportional to 1,045.16, 1,561.45 and 976.84 is: 1,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.16 : 1,561.45 = 976.84 : x
  2. Step 2: Convert to fraction form
    1,045.16/1,561.45 = 976.84/x
  3. Step 3: Cross multiply
    1,045.16x = 1,561.45 × 976.84
  4. Step 4: Simplify right side
    1,045.16x = 1,525,286.82
  5. Step 5: Solve for x
    x = 1,525,286.82/1,045.16
  6. Step 6: Final answer
    x = 1,459.38

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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.