Home / 1,507.14-2,079.27-917.46

Finding the Fourth Proportional to 1,507.14, 2,079.27 and 917.46

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Solution

The fourth proportional to 1,507.14, 2,079.27 and 917.46 is: 1,265.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.14 : 2,079.27 = 917.46 : x
  2. Step 2: Convert to fraction form
    1,507.14/2,079.27 = 917.46/x
  3. Step 3: Cross multiply
    1,507.14x = 2,079.27 × 917.46
  4. Step 4: Simplify right side
    1,507.14x = 1,907,647.05
  5. Step 5: Solve for x
    x = 1,907,647.05/1,507.14
  6. Step 6: Final answer
    x = 1,265.74

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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.