Home / 7,639.80-10,543.64-4,655.90

Finding the Fourth Proportional to 7,639.80, 10,543.64 and 4,655.90

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Solution

The fourth proportional to 7,639.80, 10,543.64 and 4,655.90 is: 6,425.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.80 : 10,543.64 = 4,655.90 : x
  2. Step 2: Convert to fraction form
    7,639.80/10,543.64 = 4,655.90/x
  3. Step 3: Cross multiply
    7,639.80x = 10,543.64 × 4,655.90
  4. Step 4: Simplify right side
    7,639.80x = 49,090,133.48
  5. Step 5: Solve for x
    x = 49,090,133.48/7,639.80
  6. Step 6: Final answer
    x = 6,425.58

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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.