Home / 2,918.10-4,378.76-1,379.06

Finding the Fourth Proportional to 2,918.10, 4,378.76 and 1,379.06

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Solution

The fourth proportional to 2,918.10, 4,378.76 and 1,379.06 is: 2,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.10 : 4,378.76 = 1,379.06 : x
  2. Step 2: Convert to fraction form
    2,918.10/4,378.76 = 1,379.06/x
  3. Step 3: Cross multiply
    2,918.10x = 4,378.76 × 1,379.06
  4. Step 4: Simplify right side
    2,918.10x = 6,038,572.77
  5. Step 5: Solve for x
    x = 6,038,572.77/2,918.10
  6. Step 6: Final answer
    x = 2,069.35

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1.5x scale

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.