Home / 4,853.10-7,279.90-1,390.26

Finding the Fourth Proportional to 4,853.10, 7,279.90 and 1,390.26

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Solution

The fourth proportional to 4,853.10, 7,279.90 and 1,390.26 is: 2,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,853.10 : 7,279.90 = 1,390.26 : x
  2. Step 2: Convert to fraction form
    4,853.10/7,279.90 = 1,390.26/x
  3. Step 3: Cross multiply
    4,853.10x = 7,279.90 × 1,390.26
  4. Step 4: Simplify right side
    4,853.10x = 10,120,953.77
  5. Step 5: Solve for x
    x = 10,120,953.77/4,853.10
  6. Step 6: Final answer
    x = 2,085.46

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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.