Home / 9,315.57-13,970.61-2,740.19

Finding the Fourth Proportional to 9,315.57, 13,970.61 and 2,740.19

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Solution

The fourth proportional to 9,315.57, 13,970.61 and 2,740.19 is: 4,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.57 : 13,970.61 = 2,740.19 : x
  2. Step 2: Convert to fraction form
    9,315.57/13,970.61 = 2,740.19/x
  3. Step 3: Cross multiply
    9,315.57x = 13,970.61 × 2,740.19
  4. Step 4: Simplify right side
    9,315.57x = 38,282,055.96
  5. Step 5: Solve for x
    x = 38,282,055.96/9,315.57
  6. Step 6: Final answer
    x = 4,109.47

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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.