Home / 2,970.32-4,098.76-1,728.08

Finding the Fourth Proportional to 2,970.32, 4,098.76 and 1,728.08

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Solution

The fourth proportional to 2,970.32, 4,098.76 and 1,728.08 is: 2,384.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.32 : 4,098.76 = 1,728.08 : x
  2. Step 2: Convert to fraction form
    2,970.32/4,098.76 = 1,728.08/x
  3. Step 3: Cross multiply
    2,970.32x = 4,098.76 × 1,728.08
  4. Step 4: Simplify right side
    2,970.32x = 7,082,985.18
  5. Step 5: Solve for x
    x = 7,082,985.18/2,970.32
  6. Step 6: Final answer
    x = 2,384.59

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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.