Home / 4,988.18-7,482.20-1,290.10

Finding the Fourth Proportional to 4,988.18, 7,482.20 and 1,290.10

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Solution

The fourth proportional to 4,988.18, 7,482.20 and 1,290.10 is: 1,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.18 : 7,482.20 = 1,290.10 : x
  2. Step 2: Convert to fraction form
    4,988.18/7,482.20 = 1,290.10/x
  3. Step 3: Cross multiply
    4,988.18x = 7,482.20 × 1,290.10
  4. Step 4: Simplify right side
    4,988.18x = 9,652,786.22
  5. Step 5: Solve for x
    x = 9,652,786.22/4,988.18
  6. Step 6: Final answer
    x = 1,935.13

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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.