Home / 1,647.90-2,273.78-975.80

Finding the Fourth Proportional to 1,647.90, 2,273.78 and 975.80

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Solution

The fourth proportional to 1,647.90, 2,273.78 and 975.80 is: 1,346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.90 : 2,273.78 = 975.80 : x
  2. Step 2: Convert to fraction form
    1,647.90/2,273.78 = 975.80/x
  3. Step 3: Cross multiply
    1,647.90x = 2,273.78 × 975.80
  4. Step 4: Simplify right side
    1,647.90x = 2,218,762.65
  5. Step 5: Solve for x
    x = 2,218,762.65/1,647.90
  6. Step 6: Final answer
    x = 1,346.42

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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.