Home / 1,678.18-2,315.88-1,014.76

Finding the Fourth Proportional to 1,678.18, 2,315.88 and 1,014.76

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Solution

The fourth proportional to 1,678.18, 2,315.88 and 1,014.76 is: 1,400.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.18 : 2,315.88 = 1,014.76 : x
  2. Step 2: Convert to fraction form
    1,678.18/2,315.88 = 1,014.76/x
  3. Step 3: Cross multiply
    1,678.18x = 2,315.88 × 1,014.76
  4. Step 4: Simplify right side
    1,678.18x = 2,350,062.39
  5. Step 5: Solve for x
    x = 2,350,062.39/1,678.18
  6. Step 6: Final answer
    x = 1,400.36

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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.