Home / 2,403.40-3,316.74-1,355.56

Finding the Fourth Proportional to 2,403.40, 3,316.74 and 1,355.56

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Solution

The fourth proportional to 2,403.40, 3,316.74 and 1,355.56 is: 1,870.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,403.40 : 3,316.74 = 1,355.56 : x
  2. Step 2: Convert to fraction form
    2,403.40/3,316.74 = 1,355.56/x
  3. Step 3: Cross multiply
    2,403.40x = 3,316.74 × 1,355.56
  4. Step 4: Simplify right side
    2,403.40x = 4,496,040.07
  5. Step 5: Solve for x
    x = 4,496,040.07/2,403.40
  6. Step 6: Final answer
    x = 1,870.70

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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.