Home / 1,122.07-1,548.55-624.87

Finding the Fourth Proportional to 1,122.07, 1,548.55 and 624.87

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Solution

The fourth proportional to 1,122.07, 1,548.55 and 624.87 is: 862.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.07 : 1,548.55 = 624.87 : x
  2. Step 2: Convert to fraction form
    1,122.07/1,548.55 = 624.87/x
  3. Step 3: Cross multiply
    1,122.07x = 1,548.55 × 624.87
  4. Step 4: Simplify right side
    1,122.07x = 967,642.44
  5. Step 5: Solve for x
    x = 967,642.44/1,122.07
  6. Step 6: Final answer
    x = 862.37

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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.