Home / 3,390.08-4,678.28-1,897.98

Finding the Fourth Proportional to 3,390.08, 4,678.28 and 1,897.98

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Solution

The fourth proportional to 3,390.08, 4,678.28 and 1,897.98 is: 2,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.08 : 4,678.28 = 1,897.98 : x
  2. Step 2: Convert to fraction form
    3,390.08/4,678.28 = 1,897.98/x
  3. Step 3: Cross multiply
    3,390.08x = 4,678.28 × 1,897.98
  4. Step 4: Simplify right side
    3,390.08x = 8,879,281.87
  5. Step 5: Solve for x
    x = 8,879,281.87/3,390.08
  6. Step 6: Final answer
    x = 2,619.20

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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.