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Finding the Fourth Proportional to 1,750.53, 2,417.81 and 1,420.66

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Solution

The fourth proportional to 1,750.53, 2,417.81 and 1,420.66 is: 1,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,750.53 : 2,417.81 = 1,420.66 : x
  2. Step 2: Convert to fraction form
    1,750.53/2,417.81 = 1,420.66/x
  3. Step 3: Cross multiply
    1,750.53x = 2,417.81 × 1,420.66
  4. Step 4: Simplify right side
    1,750.53x = 3,434,885.95
  5. Step 5: Solve for x
    x = 3,434,885.95/1,750.53
  6. Step 6: Final answer
    x = 1,962.20

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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.