Home / 1,572.14-2,356.29-693.70

Finding the Fourth Proportional to 1,572.14, 2,356.29 and 693.70

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Solution

The fourth proportional to 1,572.14, 2,356.29 and 693.70 is: 1,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.14 : 2,356.29 = 693.70 : x
  2. Step 2: Convert to fraction form
    1,572.14/2,356.29 = 693.70/x
  3. Step 3: Cross multiply
    1,572.14x = 2,356.29 × 693.70
  4. Step 4: Simplify right side
    1,572.14x = 1,634,552.48
  5. Step 5: Solve for x
    x = 1,634,552.48/1,572.14
  6. Step 6: Final answer
    x = 1,039.70

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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.