Home / 1,477.40-2,217.47-747.49

Finding the Fourth Proportional to 1,477.40, 2,217.47 and 747.49

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Solution

The fourth proportional to 1,477.40, 2,217.47 and 747.49 is: 1,121.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.40 : 2,217.47 = 747.49 : x
  2. Step 2: Convert to fraction form
    1,477.40/2,217.47 = 747.49/x
  3. Step 3: Cross multiply
    1,477.40x = 2,217.47 × 747.49
  4. Step 4: Simplify right side
    1,477.40x = 1,657,536.65
  5. Step 5: Solve for x
    x = 1,657,536.65/1,477.40
  6. Step 6: Final answer
    x = 1,121.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.