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Finding the Fourth Proportional to 1,681.46, 2,320.44 and 1,018.16

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Solution

The fourth proportional to 1,681.46, 2,320.44 and 1,018.16 is: 1,405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.46 : 2,320.44 = 1,018.16 : x
  2. Step 2: Convert to fraction form
    1,681.46/2,320.44 = 1,018.16/x
  3. Step 3: Cross multiply
    1,681.46x = 2,320.44 × 1,018.16
  4. Step 4: Simplify right side
    1,681.46x = 2,362,579.19
  5. Step 5: Solve for x
    x = 2,362,579.19/1,681.46
  6. Step 6: Final answer
    x = 1,405.08

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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.