Home / 4,210.16-6,315.01-1,288.47

Finding the Fourth Proportional to 4,210.16, 6,315.01 and 1,288.47

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Solution

The fourth proportional to 4,210.16, 6,315.01 and 1,288.47 is: 1,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210.16 : 6,315.01 = 1,288.47 : x
  2. Step 2: Convert to fraction form
    4,210.16/6,315.01 = 1,288.47/x
  3. Step 3: Cross multiply
    4,210.16x = 6,315.01 × 1,288.47
  4. Step 4: Simplify right side
    4,210.16x = 8,136,728.64
  5. Step 5: Solve for x
    x = 8,136,728.64/4,210.16
  6. Step 6: Final answer
    x = 1,932.64

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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.