Home / 5,920.16-8,172.80-4,658.40

Finding the Fourth Proportional to 5,920.16, 8,172.80 and 4,658.40

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Solution

The fourth proportional to 5,920.16, 8,172.80 and 4,658.40 is: 6,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.16 : 8,172.80 = 4,658.40 : x
  2. Step 2: Convert to fraction form
    5,920.16/8,172.80 = 4,658.40/x
  3. Step 3: Cross multiply
    5,920.16x = 8,172.80 × 4,658.40
  4. Step 4: Simplify right side
    5,920.16x = 38,072,171.52
  5. Step 5: Solve for x
    x = 38,072,171.52/5,920.16
  6. Step 6: Final answer
    x = 6,430.94

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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.