Home / 7,048.80-10,572.40-1,855.20

Finding the Fourth Proportional to 7,048.80, 10,572.40 and 1,855.20

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Solution

The fourth proportional to 7,048.80, 10,572.40 and 1,855.20 is: 2,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.80 : 10,572.40 = 1,855.20 : x
  2. Step 2: Convert to fraction form
    7,048.80/10,572.40 = 1,855.20/x
  3. Step 3: Cross multiply
    7,048.80x = 10,572.40 × 1,855.20
  4. Step 4: Simplify right side
    7,048.80x = 19,613,916.48
  5. Step 5: Solve for x
    x = 19,613,916.48/7,048.80
  6. Step 6: Final answer
    x = 2,782.59

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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.