Home / 4,987.74-7,482.57-1,909.50

Finding the Fourth Proportional to 4,987.74, 7,482.57 and 1,909.50

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Solution

The fourth proportional to 4,987.74, 7,482.57 and 1,909.50 is: 2,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.74 : 7,482.57 = 1,909.50 : x
  2. Step 2: Convert to fraction form
    4,987.74/7,482.57 = 1,909.50/x
  3. Step 3: Cross multiply
    4,987.74x = 7,482.57 × 1,909.50
  4. Step 4: Simplify right side
    4,987.74x = 14,287,967.42
  5. Step 5: Solve for x
    x = 14,287,967.42/4,987.74
  6. Step 6: Final answer
    x = 2,864.62

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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.