Home / 4,985.20-7,477.80-4,658.80

Finding the Fourth Proportional to 4,985.20, 7,477.80 and 4,658.80

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Solution

The fourth proportional to 4,985.20, 7,477.80 and 4,658.80 is: 6,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.20 : 7,477.80 = 4,658.80 : x
  2. Step 2: Convert to fraction form
    4,985.20/7,477.80 = 4,658.80/x
  3. Step 3: Cross multiply
    4,985.20x = 7,477.80 × 4,658.80
  4. Step 4: Simplify right side
    4,985.20x = 34,837,574.64
  5. Step 5: Solve for x
    x = 34,837,574.64/4,985.20
  6. Step 6: Final answer
    x = 6,988.20

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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.