Home / 7,139.04-9,855.24-4,782.72

Finding the Fourth Proportional to 7,139.04, 9,855.24 and 4,782.72

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Solution

The fourth proportional to 7,139.04, 9,855.24 and 4,782.72 is: 6,602.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.04 : 9,855.24 = 4,782.72 : x
  2. Step 2: Convert to fraction form
    7,139.04/9,855.24 = 4,782.72/x
  3. Step 3: Cross multiply
    7,139.04x = 9,855.24 × 4,782.72
  4. Step 4: Simplify right side
    7,139.04x = 47,134,853.45
  5. Step 5: Solve for x
    x = 47,134,853.45/7,139.04
  6. Step 6: Final answer
    x = 6,602.41

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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.