Home / 2,900.47-4,002.66-1,574.20

Finding the Fourth Proportional to 2,900.47, 4,002.66 and 1,574.20

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Solution

The fourth proportional to 2,900.47, 4,002.66 and 1,574.20 is: 2,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.47 : 4,002.66 = 1,574.20 : x
  2. Step 2: Convert to fraction form
    2,900.47/4,002.66 = 1,574.20/x
  3. Step 3: Cross multiply
    2,900.47x = 4,002.66 × 1,574.20
  4. Step 4: Simplify right side
    2,900.47x = 6,300,987.37
  5. Step 5: Solve for x
    x = 6,300,987.37/2,900.47
  6. Step 6: Final answer
    x = 2,172.40

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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.