Home / 1,122.15-1,548.38-624.77

Finding the Fourth Proportional to 1,122.15, 1,548.38 and 624.77

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Solution

The fourth proportional to 1,122.15, 1,548.38 and 624.77 is: 862.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.15 : 1,548.38 = 624.77 : x
  2. Step 2: Convert to fraction form
    1,122.15/1,548.38 = 624.77/x
  3. Step 3: Cross multiply
    1,122.15x = 1,548.38 × 624.77
  4. Step 4: Simplify right side
    1,122.15x = 967,389.71
  5. Step 5: Solve for x
    x = 967,389.71/1,122.15
  6. Step 6: Final answer
    x = 862.09

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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.