Home / 7,155.40-10,718.68-4,549

Finding the Fourth Proportional to 7,155.40, 10,718.68 and 4,549

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Solution

The fourth proportional to 7,155.40, 10,718.68 and 4,549 is: 6,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.40 : 10,718.68 = 4,549 : x
  2. Step 2: Convert to fraction form
    7,155.40/10,718.68 = 4,549/x
  3. Step 3: Cross multiply
    7,155.40x = 10,718.68 × 4,549
  4. Step 4: Simplify right side
    7,155.40x = 48,759,275.32
  5. Step 5: Solve for x
    x = 48,759,275.32/7,155.40
  6. Step 6: Final answer
    x = 6,814.33

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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.