Home / 1,688.21-2,328.59-1,466.78

Finding the Fourth Proportional to 1,688.21, 2,328.59 and 1,466.78

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Solution

The fourth proportional to 1,688.21, 2,328.59 and 1,466.78 is: 2,023.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.21 : 2,328.59 = 1,466.78 : x
  2. Step 2: Convert to fraction form
    1,688.21/2,328.59 = 1,466.78/x
  3. Step 3: Cross multiply
    1,688.21x = 2,328.59 × 1,466.78
  4. Step 4: Simplify right side
    1,688.21x = 3,415,510.26
  5. Step 5: Solve for x
    x = 3,415,510.26/1,688.21
  6. Step 6: Final answer
    x = 2,023.16

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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.